{"id":220381,"date":"2025-03-04T14:17:14","date_gmt":"2025-03-04T14:17:14","guid":{"rendered":"https:\/\/www.solinst.com\/dissolved-oxygen-sensors\/"},"modified":"2026-05-07T21:47:26","modified_gmt":"2026-05-07T21:47:26","slug":"dissolved-oxygen-sensors","status":"publish","type":"page","link":"https:\/\/www.solinst.com\/en-gb\/products\/solinst-eureka\/water-quality-sensors\/dissolved-oxygen-sensors\/","title":{"rendered":"Dissolved Oxygen Sensors"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; fullwidth=&#8221;on&#8221; disabled_on=&#8221;on|on|on&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; disabled=&#8221;on&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_fullwidth_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/03\/5001-easy-probe-water-quality-sonde-1920&#215;500-1.webp&#8221; alt=&#8221;solinst eureka easyprobe water quality sondes&#8221; title_text=&#8221;Solinst Eureka EasyProbe Water Quality Sondes&#8221; src_tablet=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/03\/5001-easy-probe-water-quality-sonde-965&#215;500-1.webp&#8221; src_phone=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/03\/5001-easy-probe-water-quality-sonde-965&#215;500-1.webp&#8221; src_last_edited=&#8221;on|phone&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_fullwidth_image][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;H1 and breadcrumbs&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;792ca5bd-0808-46bd-9ce7-3bcb8e74f4d3&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;4b28f470-0d73-4e9d-b92d-e6f41f2cea24&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;3078f328-b50a-467d-9906-3143dabcd7ac&#8221; header_text_align_tablet=&#8221;&#8221; header_text_align_phone=&#8221;&#8221; header_text_align_last_edited=&#8221;on|desktop&#8221; header_font_size_tablet=&#8221;30px&#8221; header_font_size_phone=&#8221;26px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h1 role=\"heading\" aria-level=\"2\" data-uw-rm-heading=\"level\">Dissolved Oxygen Sensors: Water Quality Monitoring<\/h1>\n<p>[\/et_pb_text][dsm_breadcrumbs disabled_on=&#8221;on|off|off&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; home_icon_text_color=&#8221;#d6d6d6&#8243; global_colors_info=&#8221;{}&#8221;][\/dsm_breadcrumbs][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Mobile-Only Nav with Offset&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;4759a92f-4b27-4854-bb2c-299854634e93&#8243; sticky_offset_top=&#8221;127px&#8221; global_module=&#8221;45704&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; width=&#8221;90%&#8221; custom_margin=&#8221;0px||||false|false&#8221; custom_padding=&#8221;0px||||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_code admin_label=&#8221;Eureka Mobile Nav &#8211; Select Dropdown&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_css_free_form=&#8221;select {||||      font-size: 1em; \/* Adjust font size *\/||      padding: 10px;   \/* Optional: Increase padding for better spacing *\/||      width: 100%;||      box-sizing: border-box;\/* Optional: Adjust width to fit the container *\/||      height: 50px;||}||||    \/* Style for dropdown options (fallback if needed) *\/||select option {||      font-size: 1.2em; \/* Ensures option text matches select styling *\/||      width: 100%;||    }&#8221; global_colors_info=&#8221;{}&#8221;]<select name=\"dropdown\" onchange=\"location = this.value;\"><!-- [et_pb_line_break_holder] --><option value=\"\">Solinst Eureka Menu<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/\">Solinst Eureka Main Page<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/\">Water Quality Sondes<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/manta-plus-multi-parameter-probes\/\">-Manta Multiparameter Probes<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/manta-plus-multi-parameter-probes\/manta-plus-20-multiparameter-probes\/\">&#8211;Manta Plus 20<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/manta-plus-multi-parameter-probes\/manta-plus-25-multiparameter-probes\/\">&#8211;Manta Plus 25<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/manta-plus-multi-parameter-probes\/manta-plus-30-multiparameter-probe\/\">&#8211;Manta Plus 30<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/manta-plus-multi-parameter-probes\/manta-plus-35-multiparameter-probes\/\">&#8211;Manta Plus 35<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/manta-plus-multi-parameter-probes\/manta-f35-multiparameter-water-quality-probes\/\">&#8211;Manta F35<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/manta-plus-multi-parameter-probes\/manta-plus-40-multiparameter-probe\/\">&#8211;Manta Plus 40<\/option><!-- [et_pb_line_break_holder] -->\t<!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/trimeter\/\">-Trimeter<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/trimeter\/datasheet\/\">&#8211;Datasheet<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/solinst.com\/products\/data\/5001-trimeter.pdf\">&#8212;Download (PDF)<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/trimeter\/5001-trimeter-sonde-quote-form\/\">&#8211;Get a Quote<\/option><!-- [et_pb_line_break_holder] -->\t<!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/easy-probe\/\">-EasyProbe Water Quality Sonde<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/easy-probe\/datasheet\/\">&#8211;Datasheet<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/products\/data\/5001-easy-probe.pdf\">&#8212;Download (PDF)<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/easy-probe\/5001-easyprobe-sondes-quote-form\/\">&#8211;Get a Quote<\/option><!-- [et_pb_line_break_holder] -->        <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/\">Water Quality Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/temperature-sensor\/\">-Temperature Sensor<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/ph-sensors\/\">-pH Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/orp-oxidation-reduction-potential-sensors\/\">-ORP Sensor<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/turbidity-sensors\/\">-Turbidity Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/dissolved-oxygen-sensors\/\">-Dissolved Oxygen Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/conductivity-sensors\/\">-Conductivity Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/pressure-sensors\/\">-Pressure Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/total-dissolved-gas-sensors\/\">-Total Dissolved Gas Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/c02-carbon-dioxide-sensors\/\">-CO2 Carbon Dioxide Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/par-photosynthetically-active-radiation-sensors\/\">-PAR Photosynthetic Active Radiation Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/fluorometers\/\">-Fluorometers<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/chlorophyll-sensors\/\">&#8211;Chlorophyll Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/blue-green-algae-sensors\/\">&#8211;Blue Green Algae Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/cdom-colored-dissolved-organic-matter-sensors\/\">&#8211;CDOM Coloured Dissolved Organic Matter Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/optical-brightener-sensors\/\">&#8211;Optical Brightener Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/tryptophan-sensors\/\">&#8211;Tryptophan Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/rhodamine-sensors\/\">&#8211;Rhodamine Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/flourescein-sensors\/\">&#8211;Fluorescein Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/ptsa-fluorescence-sensors\/\">&#8211;PTSA Fluorescence Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/refined-oil-and-fuel-sensors\/\">&#8211;Refined Oil and Fuel Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/crude-oil-sensors\/\">&#8211;Crude Oil Sensors<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sensors\/ise-ion-selective-electrodes\/\">-ISE Ion Selective Electrodes<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/rugged-field-devices-and-apps-for-water-quality-data-collection\/\">Rugged Field Devices and Apps<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/rugged-field-devices-and-apps-for-water-quality-data-collection\/manta-mobile-wireless-data-device\/\">-mantaMobile<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/rugged-field-devices-and-apps-for-water-quality-data-collection\/manta-link-app\/\">-MantaLink<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/rugged-field-devices-and-apps-for-water-quality-data-collection\/ruggedized-tablets-for-water-quality-monitoring\/\">-Ruggedised Tablets<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/rugged-field-devices-and-apps-for-water-quality-data-collection\/ruggedized-tablets-for-water-quality-monitoring\/samsung-galaxy-tab-active3\/\">&#8211;Samsung Galaxy Tab Active3<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/rugged-field-devices-and-apps-for-water-quality-data-collection\/ruggedized-tablets-for-water-quality-monitoring\/juniper-systems-mesa3\/\">&#8211;Juniper Systems MESA3<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/rugged-field-devices-and-apps-for-water-quality-data-collection\/ruggedized-tablets-for-water-quality-monitoring\/ipad-mini-ruggedized-tablet\/\">&#8211;iPad Mini Ruggedised Tablet<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/rugged-field-devices-and-apps-for-water-quality-data-collection\/remote-water-quality-monitoring\/\">-Remote Water Quality Monitoring  <\/option><!-- [et_pb_line_break_holder] -->\t<!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-monitoring-accessories\/\">Water Quality Monitoring Accessories<\/option><!-- [et_pb_line_break_holder] -->\t<!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-monitoring-applications\/\">Water Quality Monitoring Applications<\/option><!-- [et_pb_line_break_holder] -->   <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/quote\/\">Get a Quote<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/contact\/\">Contact Us<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/distributors\/\">Solinst Eureka Distributors<\/option><!-- [et_pb_line_break_holder] -->\t<!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/support\/\">Solinst Eureka Support<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/support\/rma-return-material-authorization-form\/\">-Return Material Authorisation<\/option><!-- [et_pb_line_break_holder] -->\t<!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/maintenance-program\/\">Solinst Eureka Maintenance Programme<\/option><!-- [et_pb_line_break_holder] -->\t<!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/\">Solinst Eureka Success Cases<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/manta-probes-monitor-water-quality-at-jellyfish-lake-palau\/\">-Manta Probes Used at JellyFish Lake<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/ut-dallas-disaster-team-uses-eureka-probes-in-dangerous-environments\/\">-Eureka Probes used in Dangerous Environments<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/solar-charged-continous-monitoring-in-rugged-conditions\/\">-SFPUC: Solar Charged Continuous Monitoring in Rugged Conditions<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/scientists-monitor-water-in-everglades-with-hydrostation\/\">-Scientists Monitor Water in Everglades with Hydrostation-in-a-briefcase<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/maintaining-water-quality-in-a-formerly-flammable-river\/\">-Maintaining Water Quality in a Formerly Flammable River<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/after-a-megafire-how-are-waterways-impacted-by-a-wildfire\/\">-BYU: After a Mega Fire, How Are Waterways Impacted by a Wildfire?<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/robots-used-to-analyze-aquatic-environments\/\">-UT: Robots used to Analyse Aquatic Environments<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/nps-eastern-river-and-mountains-network\/\">-NPS, Eastern River and Mountains Network<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/remote-monitoring-for-early-warning-of-water-pollution-events\/\">-Remote Monitoring for Early Warning of Water Pollution Events<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/turbidity-monitoring-establishes-baseline-data-prior-to-construction-activities\/\">-Turbidity Monitoring Established Baseline Data Prior to Construction Activities<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/monitoring-in-high-hypolimnetic-sulfide-concentrations\/\">-Vertical Profiler Provides Continuous Monitoring in High Hypolimnetic Sulfide Concentrations<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/success-cases\/water-quality-monitoring-in-extreme-bio-fouling-conditions\/\">-Successful Continuous Water Quality Monitoring in Extreme Bio-Fouling Conditions<\/option><!-- [et_pb_line_break_holder] --><option 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Nav&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;242faa89-ac4f-4e46-90fe-505e8c1eab79&#8243; global_module=&#8221;45700&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_menu][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;10px||||false|false&#8221; global_module=&#8221;46733&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><a href=\"https:\/\/solinst.com\/eureka\" title=\"Solinst Eureka\"><strong><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/01\/solinst-eureka-logo-800w.webp\" width=\"271\" height=\"49\" alt=\"solinst eureka logo\" class=\"wp-image-44307 alignnone size-full\" \/><\/strong><\/a><\/p>\n<p><strong>Solinst Eureka<\/strong><br \/>2113 Wells Branch Pkwy, Suite 4400<br \/>Austin, TX, USA<br \/>78728<\/p>\n<p>Tel: +1 512-302-4333<br \/>Fax: +1 512-251-6842<br \/>email: <a href=\"mailto:eureka@solinst.com\">eureka@solinst.com<\/a><\/p>\n<p>[\/et_pb_text][et_pb_slider disabled_on=&#8221;on|on|off&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; display_conditions=&#8221;W10=&#8221; link_option_url=&#8221;https:\/\/www.solinst.com\/instruments\/solinst-eureka\/?utm_source=solinst&#038;utm_medium=WC-global-sidebar-position1&#038;utm_campaign=5001&#8243; global_module=&#8221;53188&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_slide button_text=&#8221;Learn More&#8221; button_link=&#8221;https:\/\/www.solinst.com\/en-gb\/products\/solinst-eureka\/?utm_source=solinst&amp;utm_medium=WC-global-sidebar-position1&amp;utm_campaign=5001&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;RGBA(255,255,255,0)&#8221; background_enable_color=&#8221;on&#8221; background_image=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/02\/solinst-eureka-water-quality-probes-1.webp&#8221; background_enable_image=&#8221;on&#8221; background_size=&#8221;contain&#8221; background_position=&#8221;top_center&#8221; custom_button=&#8221;on&#8221; button_bg_color=&#8221;#f58025&#8243; button_border_width=&#8221;2px&#8221; button_border_radius=&#8221;20px&#8221; button_font=&#8221;|600|||||||&#8221; global_colors_info=&#8221;{}&#8221; sticky_transition=&#8221;on&#8221;]<\/p>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<h2><strong><\/strong><\/h2>\n<p><strong><\/strong><\/p>\n<p><strong><\/strong><\/p>\n<p><strong><\/strong><\/p>\n<p><strong><\/strong><\/p>\n<p><strong><\/strong><\/p>\n<h2><strong>Water Quality Probes<\/strong><\/h2>\n<p>Solinst Eureka, a global leader in the design and manufacture of multiparameter water quality sondes.[\/et_pb_slide][\/et_pb_slider][et_pb_slider disabled_on=&#8221;on|on|off&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; link_option_url=&#8221;https:\/\/www.solinst.com\/field-services\/?utm_source=solinst&#038;utm_medium=WC-global-sidebar-position2&#038;utm_campaign=FS-field-services&#8221; global_module=&#8221;53561&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_slide button_text=&#8221;Learn More&#8221; button_link=&#8221;https:\/\/www.solinst.com\/en-gb\/field-services\/?utm_source=solinst&amp;utm_medium=WC-global-sidebar-position2&amp;utm_campaign=FS-field-services&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;RGBA(255,255,255,0)&#8221; background_enable_color=&#8221;on&#8221; background_image=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/02\/solinst-field-services-sidebar.webp&#8221; background_enable_image=&#8221;on&#8221; custom_button=&#8221;on&#8221; button_bg_color=&#8221;#f58025&#8243; button_border_width=&#8221;2px&#8221; button_border_radius=&#8221;20px&#8221; button_font=&#8221;|600|||||||&#8221; global_colors_info=&#8221;{}&#8221; sticky_transition=&#8221;on&#8221;]<\/p>\n<h2><strong>Solinst Field Services<\/strong><\/h2>\n<p><strong><\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p><span>Safeguard your project\u2019s success and mitigate any potential for downtime or additional costs.<\/span><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>[\/et_pb_slide][\/et_pb_slider][\/et_pb_column][et_pb_column type=&#8221;3_4&#8243; specialty_columns=&#8221;3&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_row_inner column_structure=&#8221;1_2,1_2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;3676f7e6-7b83-4698-94ce-2cc9fa9ae43d&#8221; custom_padding=&#8221;0px||16px||false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner type=&#8221;1_2&#8243; saved_specialty_column_type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;RGBA(255,255,255,0)&#8221; custom_padding=&#8221;|||0px|false|false&#8221; custom_css_free_form=&#8221;width: 68%!important;||margin-right: 2%!important;&#8221; global_colors_info=&#8221;{}&#8221; background__hover_enabled=&#8221;on|hover&#8221; background_color__hover=&#8221;&#8221; background_enable_color__hover=&#8221;off&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_2_font_size=&#8221;24px&#8221; width=&#8221;100%&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2><strong>What is dissolved oxygen?<\/strong><\/h2>\n<p><span>Liquid water is a loose matrix of water molecules. If water without oxygen comes into contact with a source of oxygen, such as the atmosphere, then oxygen will slowly move into the gaps in the water-molecule matrix. That oxygen is called dissolved oxygen (DO); it is the same thing as dissolving table salt in water. Oxygen dissolved in water comes from the atmosphere and\/or photosynthetic organisms (algae) in the water.   <\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><strong>Why would I want to measure dissolved oxygen?<\/strong><\/h2>\n<p><span>Like humans, fish and other aquatic animals must breathe oxygen to live, and they are adapted to breathe oxygen dissolved in the water instead of oxygen in the atmosphere. Game fish, such as trout, require high DO levels; rough fish, such as carp, can exist at lower DO levels. Fish kills are often caused by low DO levels, which are often triggered, ironically, by decomposition of the algae that had been adding oxygen to the water before death.  <\/span><\/p>\n<p><span>DO also influences basic water chemistry. Highly oxygenated waters favour the oxidised form of chemicals; poorly oxygenated waters favour the reduced form of chemicals. For instance, oxygenated waters favour sulphur in the form of sulphate, SO4, while deoxygenated waters favour sulphur in the form of hydrogen sulphide (H2S). Sulphate is a benign substance, but hydrogen sulphide is a poison.   <\/span><\/p>\n<p><span>Near-zero DO levels are often found in sediment accumulated at the bottom of a water body. This chemically reducing realm helps lock nutrients and metals into the sediment. <\/span><\/p>\n<p><span>Changes in long-term DO trends can signal the need for more detailed chemical study of the water and its contamination sources.<\/span><\/p>\n<p>&nbsp;<\/p>\n<h2><strong>How is DO (Dissolved Oxygen) Measured?<\/strong><\/h2>\n<p><span>There are two types of sensors commonly used to measure DO. The traditional Clark Cell consists of two electrodes surrounded by a water-based electrolyte solution and covered with an oxygen-permeable membrane. As oxygen crosses the membrane to dissolve in the electrolyte, it is consumed in a chemical reaction which generates a small electrical current between the two electrodes. That current is directly proportional to the amount of oxygen in the water sample. This method is further described in Standard Methods 4500-O G. Eureka no longer offers this type of sensor.    <\/span><\/p>\n<p><span>The second type of DO sensor is the optical DO sensor, like Eureka\u2019s HDO, in which a blue light is directed to an oxygen-active compound that has been stabilised in an oxygen-permeable polymer. The blue light causes the oxygen-active compound to fluoresce \u2013   <\/span><span>i.e. it absorbs energy in the form of blue light and then emits energy as red light. The fluorescence is quenched by oxygen \u2013 that is, the emission of red light is reduced if oxygen molecules are present to interfere with the oxygen-active compound. The more oxygen present, the smaller the amount of red light produced.  <\/span><\/p>\n<p><span>When the polymer sensing surface is exposed to water, oxygen diffuses into the sensing surface according to the amount (\u201cpartial pressure\u201d) of oxygen in the water. Thus, the amount of red light received by the sensor is directly relatable to the amount of oxygen in the water. The red light signal is calibrated to the proper DO units.  <\/span><\/p>\n<p><span>Optical DO sensors have become the standard, and are favoured over Clark Cells, because they have little calibration drift in the field, are not flow-sensitive (no circulator needed), and do not require difficult membrane changes that annoy Clark sensor users. On 1 July 2007 the EPA approved the ASTM International Method D888-05, Standard Test Methods for Dissolved Oxygen in Water for measuring DO under 40 CFR 136, making optical DO sensors acceptable for use by government agencies. <\/span><\/p>\n<p><span>The amount of oxygen dissolved in, for instance, a lake or river, depends on several variables. The higher the barometric pressure, the more oxygen can dissolve in water. And the higher the water temperature, the less oxygen can dissolve in water.  <\/span><\/p>\n<p><span>If the water has absorbed as much oxygen as it can for a particular combination of temperature and barometric pressure, the water is said to be saturated with oxygen. If, on average, no oxygen is moving into the water or out of the water, the oxygen in the water is said to be in equilibrium with the oxygen in the atmosphere. <\/span><\/p>\n<p><span>Dissolved oxygen (DO) is commonly reported in two units. DO concentration is the weight of oxygen dissolved in water and is reported in mg\/l or ppm. DO percent saturation is the ratio of oxygen in the water to the maximum amount of oxygen that can dissolve in a water sample under the same conditions and is reported in % saturation.  <\/span><\/p>\n<p><span>The older Clark Cell sensor were traditionally calibrated in water-saturated air, but calibration in air-saturated water is growing in favour. The latter is done by shaking half a litre of water in a one-litre container for one minute, and then waiting one minute for the bubbles to rise to the surface and disappear. The DO sensor is immersed in that water and given time to stabilise. With knowledge of the water temperature and the barometric pressure, the instrument can figure out the DO level in the water because it knows that the water is saturated with oxygen. The instrument sets the DO sensor reading accordingly.    <\/span>[\/et_pb_text][\/et_pb_column_inner][et_pb_column_inner type=&#8221;1_2&#8243; saved_specialty_column_type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;RGBA(255,255,255,0)&#8221; custom_css_free_form=&#8221;width: 30%!important;&#8221; global_colors_info=&#8221;{}&#8221; background_color__hover=&#8221;&#8221; background__hover_enabled=&#8221;on|hover&#8221; background_enable_color__hover=&#8221;off&#8221;][et_pb_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/01\/solinst-eureka-dissolved-oxygen-sensor-2.webp&#8221; alt=&#8221;solinst eureka dissolved oxygen sensor&#8221; title_text=&#8221;Solinst Eureka Dissolved Oxygen Sensor&#8221; align=&#8221;center&#8221; align_tablet=&#8221;center&#8221; align_phone=&#8221;center&#8221; align_last_edited=&#8221;on|tablet&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_margin_tablet=&#8221;20px||||false|false&#8221; custom_margin_phone=&#8221;20px||||false|false&#8221; custom_margin_last_edited=&#8221;on|tablet&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_text_color=&#8221;#000000&#8243; custom_margin=&#8221;27px||||false|false&#8221; header_2_font_size_tablet=&#8221;24px&#8221; header_2_font_size_phone=&#8221;24px&#8221; header_2_font_size_last_edited=&#8221;on|tablet&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2 style=\"text-align: left;\"><strong>DO Dissolved Oxygen Sensors for<br \/>Water Quality Sondes<\/strong><\/h2>\n<div class=\"jqw1mt QfrfFD cell\">\n<div dir=\"ltr\">\n<ul data-hook=\"stacked-info-section\" class=\"wEn8Wy\"><\/ul>\n<ul>\n<li><strong>Range<br \/><\/strong>0 to 50 mg\/l<br \/>0 to 500% saturation<\/li>\n<li><strong>Accuracy<br \/><\/strong>\u00b10.1 mg\/l (0-20 mg\/l), \u00b10.15 mg\/l (20-30 mg\/l) and \u00b15% of reading (30-50 mg\/l)<\/li>\n<li><strong>Resolution<\/strong><br \/><span>0.01 mg\/l and 0.1% saturation<\/span><\/li>\n<li><strong>Units<\/strong><br \/><span>mg\/l (ppm), % saturation<\/span><\/li>\n<li><strong>Calibration<\/strong><br \/>one point in air-saturated water or<br \/>two points (air-saturated water and zero)<\/li>\n<li><strong>Maintenance<br \/><\/strong><span>cleaning and calibration; replace sensor tip (5+ years life)<\/span><\/li>\n<li><strong>Sensor Life<\/strong><br \/><span>6+ years<\/span><\/li>\n<li><strong>Sensor Type<\/strong><br \/><span>optical sensor, lifetime luminescence method<\/span><\/li>\n<li><strong>Pressure Limit<\/strong><br \/><span>200 metres of water<\/span><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjQ1ODA3In19@&#8221; button_text=&#8221;Get Quote&#8221; admin_label=&#8221;get quote button&#8221; _builder_version=&#8221;4.27.4&#8243; _dynamic_attributes=&#8221;button_url&#8221; _module_preset=&#8221;c9e00792-1360-4998-8cf9-5f6772c944ba&#8221; global_module=&#8221;46404&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;3px||4px|||&#8221;][et_pb_column_inner saved_specialty_column_type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_2_font=&#8221;|700|||||||&#8221; header_2_text_color=&#8221;#000000&#8243; custom_margin=&#8221;27px||||false|false&#8221; hover_enabled=&#8221;0&#8243; header_2_font_size_tablet=&#8221;24px&#8221; header_2_font_size_phone=&#8221;24px&#8221; header_2_font_size_last_edited=&#8221;on|tablet&#8221; global_colors_info=&#8221;{}&#8221; sticky_enabled=&#8221;0&#8243;]<\/p>\n<h2 style=\"text-align: left;\"><strong>Success Cases<\/strong><\/h2>\n<p>[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner column_structure=&#8221;1_2,1_2&#8243; disabled_on=&#8221;off|off|off&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; border_width_bottom=&#8221;1px&#8221; border_color_bottom=&#8221;#d3d3d3&#8243; global_colors_info=&#8221;{}&#8221; locked=&#8221;off&#8221;][et_pb_column_inner type=&#8221;1_2&#8243; saved_specialty_column_type=&#8221;3_4&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/06\/high-resolution-temporal-monjitoring-o-arid-urban-lake-965&#215;500-1.webp&#8221; alt=&#8221;high resolution temporal monitoring of an arid urban lake&#8221; title_text=&#8221;High-Resolution Temporal Monitoring of an Arid, Urban Lake&#8221; url=&#8221;@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6Ijk5MzMyIn19@&#8221; force_fullwidth=&#8221;on&#8221; _builder_version=&#8221;4.27.4&#8243; _dynamic_attributes=&#8221;url&#8221; _module_preset=&#8221;default&#8221; border_width_all=&#8221;1px&#8221; border_color_all=&#8221;#bcbcbc&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column_inner][et_pb_column_inner type=&#8221;1_2&#8243; saved_specialty_column_type=&#8221;3_4&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_2_line_height=&#8221;1.3em&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2><a href=\"https:\/\/www.solinst.com\/en-gb\/products\/solinst-eureka\/solinst-eureka-success-cases\/high-resolution-temporal-monitoring-of-an-arid-urban-lake\/\" title=\"High-Resolution Temporal Monitoring of an Arid, Urban Lake\"><strong>High-Resolution Temporal Monitoring of an Arid, Urban Lake<\/strong><\/a><\/h2>\n<p>Tempe Town Lake is an artificial lake located near the urban core of Tempe, AZ, derived from the damming of the Salt River. It was constructed in 1999 primarily for the use of recreation such as fishing and boating. This lake is Arizona\u2019s second most visited tourist attraction that generated a cumulative economic impact of over $1.5 billion dollars since its creation, so it is critical to monitor and maintain its viability. Since 2005, it has been subject to long-term water quality monitoring. Dissolved oxygen levels are generally above 5 mg\/L, suggesting the lake is not eutrophic. The lake also trends alkaline, with an average pH around 8, likely due to its high productivity and carbonate-poor basement rock.     <\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6Ijk5MzMyIn19@&#8221; button_text=&#8221;Arizona State University&#8221; button_alignment=&#8221;right&#8221; _builder_version=&#8221;4.27.4&#8243; _dynamic_attributes=&#8221;button_url&#8221; _module_preset=&#8221;default&#8221; custom_button=&#8221;on&#8221; button_text_color=&#8221;#000000&#8243; button_bg_color=&#8221;#FFFFFF&#8221; button_border_color=&#8221;#ff8500&#8243; button_border_radius=&#8221;20px&#8221; button_icon=&#8221;&#x3d;||divi||400&#8243; custom_padding=&#8221;0px|||||&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;||9px|||&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner saved_specialty_column_type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2><strong>Related Products<\/strong><\/h2>\n<p>[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner column_structure=&#8221;1_2,1_2&#8243; disabled_on=&#8221;off|off|off&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;0px||1em||false|false&#8221; custom_padding=&#8221;0px||0px||false|false&#8221; border_width_bottom=&#8221;1px&#8221; border_color_bottom=&#8221;#d3d3d3&#8243; global_module=&#8221;69009&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner type=&#8221;1_2&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/01\/solinst-eureka-multi-parameter-probes.webp&#8221; alt=&#8221;solinst eureka multi-parameter water probes&#8221; title_text=&#8221;Solinst Eureka Multi-parameter Water Probes&#8221; url=&#8221;@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjY1MDM3In19@&#8221; _builder_version=&#8221;4.27.4&#8243; _dynamic_attributes=&#8221;url&#8221; _module_preset=&#8221;default&#8221; border_color_all=&#8221;#bcbcbc&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column_inner][et_pb_column_inner type=&#8221;1_2&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_2_line_height=&#8221;1.3em&#8221; custom_margin=&#8221;60px||||false|false&#8221; custom_margin_tablet=&#8221;0px||||false|false&#8221; custom_margin_phone=&#8221;0px||||false|false&#8221; custom_margin_last_edited=&#8221;on|desktop&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3><a href=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/manta-plumultiparameter-probes\/\" title=\"Manta Series Water Quality Probes\">Manta Series Water Quality Probes<\/a><\/h3>\n<p><a href=\"https:\/\/www.solinst.com\/en-gb\/products\/solinst-eureka\/\" title=\"Solinst Eureka Water Quality Probes\"><strong>Solinst Eureka<\/strong><\/a><span>  offers the largest selection of water quality sensor technologies in the industry. So in addition to standard configurations, each probe may be customised for your specific application. Pick sensors of your choice to fully populate larger probes, or add a battery pack to convert a probe to a logging device.  <\/span><\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjY1MDM3In19@&#8221; button_text=&#8221;Manta Water Quality Sondes&#8221; button_alignment=&#8221;left&#8221; button_alignment_tablet=&#8221;center&#8221; button_alignment_phone=&#8221;center&#8221; button_alignment_last_edited=&#8221;on|phone&#8221; _builder_version=&#8221;4.27.4&#8243; _dynamic_attributes=&#8221;button_url&#8221; _module_preset=&#8221;default&#8221; custom_button=&#8221;on&#8221; button_text_size=&#8221;18px&#8221; button_text_color=&#8221;#000000&#8243; button_bg_color=&#8221;#FFFFFF&#8221; button_border_color=&#8221;#ff8500&#8243; button_border_radius=&#8221;20px&#8221; button_icon=&#8221;&#x3d;||divi||400&#8243; custom_padding=&#8221;0px|||||&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner column_structure=&#8221;1_2,1_2&#8243; disabled_on=&#8221;off|off|off&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; border_width_bottom=&#8221;1px&#8221; border_color_bottom=&#8221;#d3d3d3&#8243; global_module=&#8221;69010&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner type=&#8221;1_2&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/03\/5001-trimeter-water-quality-sonde-965&#215;500-1.webp&#8221; alt=&#8221;solinst eureka trimeter water quality sondes&#8221; title_text=&#8221;Solinst Eureka Trimeter Water Quality Sondes&#8221; url=&#8221;@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjY0OTQwIn19@&#8221; _builder_version=&#8221;4.27.4&#8243; _dynamic_attributes=&#8221;url&#8221; _module_preset=&#8221;default&#8221; border_color_all=&#8221;#bcbcbc&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column_inner][et_pb_column_inner type=&#8221;1_2&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_2_line_height=&#8221;1.3em&#8221; custom_margin=&#8221;60px||||false|false&#8221; custom_margin_tablet=&#8221;0px||||false|false&#8221; custom_margin_phone=&#8221;0px||||false|false&#8221; custom_margin_last_edited=&#8221;on|desktop&#8221; link_option_url=&#8221;https:\/\/www.solinst.com\/products\/level-measurement-devices\/103-tag-line\/&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3><a href=\"https:\/\/www.solinst.com\/en-gb\/products\/solinst-eureka\/water-quality-sondes\/trimeter\/\" title=\"Manta Trimeter Water Quality Probe\">Manta Trimeter Water Quality Probe<\/a><\/h3>\n<p><span>The <a href=\"https:\/\/www.solinst.com\/en-gb\/products\/solinst-eureka\/water-quality-sondes\/trimeter\/\" title=\"Trimeter Low Cost Water Quality Sonde\"><strong>Trimeter<\/strong><\/a> holds any one sensor* from the Sensor Parameters list, Plus temperature and depth sensors (both are optional). For example, a Trimeter configuration could be turbidity, temperature, and depth. Another example could be DO and temperature.  <\/span><\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjY0OTQwIn19@&#8221; button_text=&#8221;Manta Trimeter Water Quality Probe&#8221; button_alignment=&#8221;left&#8221; button_alignment_tablet=&#8221;center&#8221; button_alignment_phone=&#8221;center&#8221; button_alignment_last_edited=&#8221;on|phone&#8221; _builder_version=&#8221;4.27.4&#8243; _dynamic_attributes=&#8221;button_url&#8221; _module_preset=&#8221;default&#8221; custom_button=&#8221;on&#8221; button_text_size=&#8221;18px&#8221; button_text_color=&#8221;#000000&#8243; button_bg_color=&#8221;#FFFFFF&#8221; button_border_color=&#8221;#ff8500&#8243; button_border_radius=&#8221;20px&#8221; button_icon=&#8221;&#x3d;||divi||400&#8243; custom_padding=&#8221;0px|||||&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner column_structure=&#8221;1_2,1_2&#8243; disabled_on=&#8221;off|off|off&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; border_width_bottom=&#8221;1px&#8221; border_color_bottom=&#8221;#d3d3d3&#8243; global_module=&#8221;69121&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner type=&#8221;1_2&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/03\/5001-easyprobe-water-quality-sondes.webp&#8221; alt=&#8221;solinst eureka easyprobe water quality sondes&#8221; title_text=&#8221;Solinst Eureka EasyProbe Water Quality Sondes&#8221; url=&#8221;@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjY1MTQ3In19@&#8221; _builder_version=&#8221;4.27.4&#8243; _dynamic_attributes=&#8221;url&#8221; _module_preset=&#8221;default&#8221; border_color_all=&#8221;#bcbcbc&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column_inner][et_pb_column_inner type=&#8221;1_2&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_2_line_height=&#8221;1.3em&#8221; custom_margin=&#8221;60px||||false|false&#8221; custom_margin_tablet=&#8221;0px||||false|false&#8221; custom_margin_phone=&#8221;0px||||false|false&#8221; custom_margin_last_edited=&#8221;on|desktop&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3><a href=\"https:\/\/www.solinst.com\/en-gb\/products\/solinst-eureka\/water-quality-sondes\/easyprobe-water-quality-sonde\/\" title=\"EasyProbe: Water Quality Sondes\">EasyProbe: Water Quality Sondes<\/a><\/h3>\n<p><span>The <a href=\"https:\/\/www.solinst.com\/en-gb\/products\/solinst-eureka\/water-quality-sondes\/easyprobe-water-quality-sonde\/\" title=\"EasyProbe Water Quality Sonde\"><strong>EasyProbe<\/strong><\/a>, by Solinst Eureka, is a high-performance, cost-effective water quality monitor. It&#8217;s ideal for spot-checking, remote telemetry, education, research, aquaculture, and more. The EasyProbe20 includes sensors for temperature, dissolved oxygen, conductivity, and pH, while the EasyProbe30 adds a turbidity sensor. Eureka multiprobes are known for their reliability, with a three-year warranty covering all sensors, and have the lowest maintenance costs in the industry.   <\/span><\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjY1MTQ3In19@&#8221; button_text=&#8221;Manta Easy Probe Water Quality Sondes&#8221; button_alignment=&#8221;left&#8221; button_alignment_tablet=&#8221;center&#8221; button_alignment_phone=&#8221;center&#8221; button_alignment_last_edited=&#8221;on|phone&#8221; _builder_version=&#8221;4.27.4&#8243; _dynamic_attributes=&#8221;button_url&#8221; _module_preset=&#8221;default&#8221; custom_button=&#8221;on&#8221; button_text_size=&#8221;18px&#8221; button_text_color=&#8221;#000000&#8243; button_bg_color=&#8221;#FFFFFF&#8221; button_border_color=&#8221;#ff8500&#8243; button_border_radius=&#8221;20px&#8221; button_icon=&#8221;&#x3d;||divi||400&#8243; custom_padding=&#8221;0px|||||&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner column_structure=&#8221;1_2,1_2&#8243; disabled_on=&#8221;off|off|off&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; border_width_bottom=&#8221;1px&#8221; border_color_bottom=&#8221;#d3d3d3&#8243; global_module=&#8221;44627&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner type=&#8221;1_2&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/01\/3001-levelogger-5-ltc.webp&#8221; alt=&#8221;solinst levelogger 5 ltc water level water temperature and water conductivity datalogger&#8221; title_text=&#8221;Solinst Levelogger 5 LTC Water Level Water Temperature And Water Conductivity Datalogger&#8221; url=&#8221;https:\/\/www.solinst.com\/products\/dataloggers-and-telemetry\/3001-levelogger-series\/ltc-levelogger\/&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; border_color_all=&#8221;#bcbcbc&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column_inner][et_pb_column_inner type=&#8221;1_2&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_2_line_height=&#8221;1.3em&#8221; custom_margin=&#8221;60px||||false|false&#8221; custom_margin_tablet=&#8221;0px||||false|false&#8221; custom_margin_phone=&#8221;0px||||false|false&#8221; custom_margin_last_edited=&#8221;on|desktop&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3>Water Level, Temperature &amp; Conductivity Datalogging<\/h3>\n<p>The <a href=\"https:\/\/www.solinst.com\/products\/dataloggers-and-telemetry\/3001-levelogger-series\/ltc-levelogger\/\" title=\"Levelogger 5 LTC Level Temperature and Conductivity Datalogger\"><strong>Levelogger 5 LTC<\/strong><\/a> measures and logs water level fluctuations, temperature and conductivity. It is programmed to record at intervals as often as 2 seconds. It includes an 8-year battery, memory for 100,000 sets of readings, and comes in 6 pressure ranges. A PFAS-free coating (inside and out) provides superior corrosion and abrasion resistance.   <\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;https:\/\/www.solinst.com\/products\/dataloggers-and-telemetry\/3001-levelogger-series\/ltc-levelogger\/&#8221; button_text=&#8221;Versatile Conductivity Datalogger&#8221; button_alignment=&#8221;left&#8221; button_alignment_tablet=&#8221;center&#8221; button_alignment_phone=&#8221;center&#8221; button_alignment_last_edited=&#8221;on|phone&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_button=&#8221;on&#8221; button_text_size=&#8221;18px&#8221; button_text_color=&#8221;#000000&#8243; button_bg_color=&#8221;#FFFFFF&#8221; button_border_color=&#8221;#ff8500&#8243; button_border_radius=&#8221;20px&#8221; button_icon=&#8221;&#x3d;||divi||400&#8243; custom_padding=&#8221;0px|||||&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner column_structure=&#8221;1_2,1_2&#8243; disabled_on=&#8221;off|off|off&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; border_width_bottom=&#8221;1px&#8221; border_color_bottom=&#8221;#d3d3d3&#8243; global_module=&#8221;44750&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner type=&#8221;1_2&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/01\/107-tlc-meter.webp&#8221; alt=&#8221;solinst model 107 tlc meter for temperature and conductivity profiling&#8221; title_text=&#8221;Solinst Model 107 TLC Meter For Temperature And Conductivity Profiling&#8221; url=&#8221;https:\/\/www.solinst.com\/products\/level-measurement-devices\/107-tlc-meter\/&#8221; align=&#8221;center&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; max_width=&#8221;100%&#8221; border_color_all=&#8221;#bcbcbc&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column_inner][et_pb_column_inner type=&#8221;1_2&#8243; _builder_version=&#8221;4.25.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_2_line_height=&#8221;1.3em&#8221; custom_margin=&#8221;60px||||false|false&#8221; custom_margin_tablet=&#8221;0px||||false|false&#8221; custom_margin_phone=&#8221;0px||||false|false&#8221; custom_margin_last_edited=&#8221;on|desktop&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3>TLC Meter \u2013 Measure Accurate Temperature, Level &amp; Conductivity<\/h3>\n<p>A <a href=\"https:\/\/www.solinst.com\/products\/level-measurement-devices\/107-tlc-meter\/\" title=\"TLC Meter Water Temperature and Water Conductivity Profiling\"><strong>TLC Meter<\/strong><\/a> provides accurate, stable temperature and conductivity measurements, displayed on a convenient LCD display for easy reading. 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Liquid water is a loose matrix of water molecules. If water without oxygen comes into contact with a source of oxygen, such as the atmosphere, then oxygen will slowly move into the gaps in the water-molecule matrix. That oxygen is called dissolved oxygen (DO); it is the same thing as dissolving table salt in water. Oxygen dissolved in water comes from the atmosphere and\/or photosynthetic organisms (algae) in the water. &nbsp; Why would I want to measure dissolved oxygen? Like humans, fish and other aquatic animals must breathe oxygen to live, and they are adapted to breathe oxygen dissolved in the water instead of oxygen in the atmosphere. Game fish, such as trout, require high DO levels; rough fish, such as carp, can exist at lower DO levels. Fish kills are often caused [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":220385,"parent":220652,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"folder":[294],"class_list":["post-220381","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Dissolved Oxygen Sensors: Water Quality Monitoring<\/title>\n<meta name=\"description\" content=\"Dissolved Oxygen Sensors: a blue light is directed to an oxygen-active compound that has been stabilized in an oxygen-permeable polymer.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.solinst.com\/en-gb\/products\/solinst-eureka\/water-quality-sensors\/dissolved-oxygen-sensors\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Solinst Eureka Dissolved Oxygen Sensors\" \/>\n<meta property=\"og:description\" content=\"Explore the importance of dissolved oxygen sensors in water quality monitoring. 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