{"id":220249,"date":"2025-03-06T20:02:23","date_gmt":"2025-03-06T20:02:23","guid":{"rendered":"https:\/\/www.solinst.com\/tryptophan-sensors\/"},"modified":"2026-05-07T21:15:41","modified_gmt":"2026-05-07T21:15:41","slug":"tryptophan-sensors","status":"publish","type":"page","link":"https:\/\/www.solinst.com\/en-gb\/products\/solinst-eureka\/water-quality-sensors\/tryptophan-sensors\/","title":{"rendered":"Tryptophan 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\">Tryptophan 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\/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] -->  <!-- [et_pb_line_break_holder] --><\/select>[\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; specialty=&#8221;on&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;5a5bca26-a9a5-4e6c-8fca-d64da3bdcd40&#8243; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;1_4&#8243; _builder_version=&#8221;4.16&#8243; custom_padding=&#8221;|||&#8221; global_colors_info=&#8221;{}&#8221; custom_padding__hover=&#8221;|||&#8221;][et_pb_menu menu_id=&#8221;252&#8243; admin_label=&#8221;Eureka Main 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; 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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<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.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>[\/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\/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||||false|false&#8221; hover_enabled=&#8221;0&#8243; global_colors_info=&#8221;{}&#8221; background__hover_enabled=&#8221;on|hover&#8221; sticky_enabled=&#8221;0&#8243;][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>Why would I want to measure Tryptophan?<\/strong><\/h2>\n<p><span>Tryptophan is an amino acid dissolved in water that has a specific excitation and emission. It is classified as protein-like organic matter and sources may include water systems with high biological activity and wastewater or industrial discharge. Tryptophan is yet another parameter researchers can measure to track wastewater effluent, which may greatly impact habitats and wildlife.  <\/span><\/p>\n<h2><strong>How is Tryptophan Measured?<\/strong><\/h2>\n<p>Many of the instruments available for measuring fluorescence of Tryptophan are cumbersome, complex, expensive, and require a high degree of training and expertise to operate. These instruments may also provide too much information to end users who are looking for a simple measure of fluorescence response from, and relative changes of Tryptophan in water. Solinst Eureka\u2019s tryptophan sensor is a <a href=\"https:\/\/www.solinst.com\/en-gb\/fluorometers\/\" title=\"Fluorometer Sensor Technology\"><strong>fluorometric sensor<\/strong><\/a>. Fluorescence occurs when a molecule absorbs light energy at one wavelength and then emits that energy at a different wavelength. Fluorometric sensors emit light at a certain wavelength, and look for a very specific, different wavelength in return.    <\/p>\n<p>The Tryptophan fluorometer outputs a 0-5 volt analogue signal proportional to the fluorescence response of the Tryptophan dissolved in water. The <a href=\"https:\/\/www.solinst.com\/instruments\/solinst-eureka\/water-quality-sondes\/manta-plumultiparameter-probes\/\" title=\"Manta Plus Multiparameter Probes\"><strong>MantaPlus<\/strong><\/a> converts the signal to a digital format, for the measurement of Tryptophan in concentrations 0 \u2013 5000 ppb. <\/p>\n<p>For the purpose of identifying the presence\/absence of protein-like organic matter that may indicate wastewater discharge, Eureka\u2019s Tryptophan fluorometer enables users to detect Tryptophan within a low level range (limit of detection of 3 ppb) needed for this type of environmental study.<\/p>\n<h2><strong>What should I know about Tryptophan measurement in the field?<\/strong><\/h2>\n<p><span>The microbial contamination of waterways by faecal microbes, and specifically, pathogenic microbes, presents a major problem in the United Kingdom and worldwide. Recreational waters are susceptible to a variety of microbial pollution sources containing pathogenic microorganisms that can cause GI, upper respiratory tract, ears, eyes, nasal cavity and skin infections. Laboratory analysis, used for measuring faecal indicator bacteria can take 18-24 hours, which is too long since water conditions may change rapidly, putting swimmers at increased risk. Many studies are underway to explore the alternative approach of measuring tryptophan fluorescence real-time, and using correlation coefficients to translate to Total Coliforms. This approach is much less costly over time, with faster results.    <\/span><\/p>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; custom_margin=&#8221;40px||||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2><strong>Features of Solinst Eureka\u2019s Tryptophan Sensors<br \/><\/strong><\/h2>\n<p>Solinst Eureka MantaPlus multiparameter probes may be configured to include any of our fluorometers. The Tryptophan sensor may be installed along with other sensors such as additional fluorometers, turbidity, dissolved oxygen, pH and conductivity. This makes for a cost-effective approach, as there is no need to buy a dedicated fluorometer system. Operation is made easy, as the Tryptophan sensor is controlled by the Manta software, like other installed sensors. When only the Tryptophan sensor is needed, it may be installed stand-alone on one of Eureka\u2019s smaller probes, such as the Trimeter.     <\/p>\n<p>Manta Plus and Trimeter Multiprobes may be configured as loggers with battery packs for autonomous self-powered deployment, used with field displays for site-to-site spot checking, or connected to data telemetry stations for real-time remote monitoring. Eureka sondes equipped with fluorometers are portable, durable, and cost-effective. <span> <\/span><\/p>\n<p>[\/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\/03\/solinst-eureka-tryptophan-sensors.webp&#8221; alt=&#8221;tryptophan sensors for water quality monitoring of effluent discharge&#8221; title_text=&#8221;Tryptophan Sensors For Water Quality Monitoring Of Effluent Discharge&#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_size=&#8221;24px&#8221; width=&#8221;100%&#8221; custom_margin=&#8221;30px||||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2 style=\"text-align: left;\"><strong>Tryptophan 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><span>0 to 5000 ppb<\/span><\/li>\n<li><strong>Accuracy<br \/><\/strong><span>linearity of 0.99 R\u00b2<\/span><\/li>\n<li><strong>Resolution<br \/><\/strong><span>0.01<\/span><\/li>\n<li><strong>Units<\/strong><br \/><span>ppb<\/span><\/li>\n<li><strong>Calibration<br \/><\/strong>lab-qualified sample<\/li>\n<li><strong>Maintenance<br \/><\/strong><span>occasional cleaning<\/span><\/li>\n<li><strong>Sensor Life<\/strong><br \/><span>5+ years<\/span><\/li>\n<li><strong>Sensor Type<br \/><\/strong><span>fluorescence<\/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;||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; 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\/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\/instruments\/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\/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\/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; 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\/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\/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; link_option_url=&#8221;https:\/\/www.solinst.com\/products\/level-measurement-devices\/103-tag-line\/&#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; link_option_url=&#8221;https:\/\/www.solinst.com\/products\/level-measurement-devices\/103-tag-line\/&#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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**************\/<!-- [et_pb_line_break_holder] -->var s_code=s.t();if(s_code)document.write(s_code)\/\/--><\/script><!-- [et_pb_line_break_holder] --><script language=\"JavaScript\" type=\"text\/javascript\"><!--<!-- [et_pb_line_break_holder] -->if(navigator.appVersion.indexOf('MSIE')>=0)document.write(unescape('%3C')+'!-'+'-')<!-- [et_pb_line_break_holder] -->\/\/--><\/script><noscript><a href=\"https:\/\/www.omniture.com\" title=\"Web Analytics\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/solinst.d2.sc.omtrdc.net\/b\/ss\/solinst-prod\/1\/H.21--NS\/0\" height=\"1\" width=\"1\" border=\"0\" alt=\"\"><\/a><\/noscript><!--\/DO NOT REMOVE\/--><!-- [et_pb_line_break_holder] --><!-- End SiteCatalyst code version: H.21. -->[\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tryptophan Sensors: Water Quality Monitoring<div class=\"et_pb_module dsm_breadcrumbs dsm_breadcrumbs_0\">\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<div class=\"et_pb_module_inner\">\n\t\t\t\t\t<nav class=\"dsm_breadcrumbs_wrap\">\n\t\t\t\t<ul class=\"dsm_breadcrumbs\" itemscope itemtype=\"https:\/\/schema.org\/BreadcrumbList\">\t\t\t<li class=\"dsm_breadcrumbs_item dsm_home_item dsm_home_item_custom\" itemprop=\"itemListElement\" itemscope\n\t\t\titemtype=\"https:\/\/schema.org\/ListItem\">\n\t\t\t\t<a href=\"https:\/\/www.solinst.com\/en-gb\/\" itemprop=\"item\" target=\"\">\n\t\t\t\t\t<span class='dsm_home_text_wrapper'>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"et-pb-icon dsm_home_icon\">\ue009<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"dsm_home_text\" itemprop=\"name\">\n\t\t\t\t\t\t\t\tHome\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t<\/a>\n\t\t\t\t<meta itemprop=\"position\" content=\"1\" \/>\n\t\t\t<\/li>\n\n\t\t<li class=\"dsm_breadcrumbs_separator\"> <span class=\"et-pb-icon dsm_separator_icon\">5<\/span><\/li><\/ul>\n\t\t\t<\/nav>\n\t\t\t\t<\/div>\n\t\t\t<\/div> Solinst Eureka2113 Wells Branch Pkwy, Suite 4400Austin, TX, USA78728 Tel: +1 512-302-4333Fax: +1 512-251-6842email: eureka@solinst.com Water Quality Probes Solinst Eureka, a global leader in the design and manufacture of multiparameter water quality sondes. &nbsp; &nbsp; &nbsp; &nbsp;Solinst Field Services &nbsp; &nbsp; &nbsp; Safeguard your project\u2019s success and mitigate any potential for downtime or additional costs. &nbsp; &nbsp;Why would I want to measure Tryptophan? Tryptophan is an amino acid dissolved in water that has a specific excitation and emission. It is classified as protein-like organic matter and sources may include water systems with high biological activity and wastewater or industrial discharge. Tryptophan is yet another parameter researchers can measure to track wastewater effluent, which may greatly impact habitats and wildlife. How is Tryptophan Measured? Many of the instruments available for measuring fluorescence of Tryptophan are cumbersome, complex, expensive, and require a high degree of training and expertise to operate. These instruments may also provide too much information to end users who are looking for a simple measure of fluorescence response from, and relative changes of Tryptophan in water. Solinst Eureka\u2019s tryptophan sensor is a fluorometric sensor. Fluorescence occurs when a molecule [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":220137,"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":[309],"class_list":["post-220249","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>Tryptophan Sensors: Water Quality Monitoring<\/title>\n<meta name=\"description\" content=\"Tryptophan Sensors: Water Quality Monitoring Tryptophan is an amino acid dissolved in water that has a specific excitation and emission.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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