{"id":221490,"date":"2026-01-29T19:47:48","date_gmt":"2026-01-29T19:47:48","guid":{"rendered":"https:\/\/www.solinst.com\/solinst-flute\/405-reverse-head-profile\/reverse-head-profile-data-sheet\/"},"modified":"2026-05-07T22:36:22","modified_gmt":"2026-05-07T22:36:22","slug":"reverse-head-profile-data-sheet","status":"publish","type":"page","link":"https:\/\/www.solinst.com\/en-gb\/products\/solinst-flute\/405-reverse-head-profile\/reverse-head-profile-data-sheet\/","title":{"rendered":"Reverse Head Profile Data Sheet"},"content":{"rendered":"<p>[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;default&#8221; header_font=&#8221;|700|||||||&#8221; header_font_size=&#8221;36px&#8221; custom_margin=&#8221;||5px|||&#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; header_font_size_last_edited=&#8221;on|phone&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h1 role=\"heading\" aria-level=\"2\" data-uw-rm-heading=\"level\">Reverse Head Profile Data Sheet<\/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;4.27.2&#8243; _module_preset=&#8221;4759a92f-4b27-4854-bb2c-299854634e93&#8243; sticky_offset_top=&#8221;127px&#8221; global_module=&#8221;5745&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.2&#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;4.27.2&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_code admin_label=&#8221;405 Mobile Nav &#8211; Select Dropdown&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; hover_enabled=&#8221;0&#8243; 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; sticky_enabled=&#8221;0&#8243;]<select name=\"dropdown\" onchange=\"location = this.value;\"><!-- [et_pb_line_break_holder] --><option value=\"\">405 Solinst Flute Menu<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/\">405 Water Flute Main Page<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/405-water-flute\/\">405 Water Flute<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/405-water-flute\/datasheet\/\">-Datasheet<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/405-water-flute\/datasheet\/flute-flexible-liners\/\">&#8211;Flute Flexible Liners<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/405-water-flute\/datasheet\/water-flute-system-installation\/\">&#8211;Water Flute System Installation<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/405-water-flute\/datasheet\/sampling-groundwater-using-water-flute\/\">&#8211;Sampling Groundwater Using Water Flute<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/405-water-flute\/datasheet\/water-flute-field-applications\/\">&#8211;Water Flute Field Applications<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/405-water-flute\/datasheet\/importance-of-multilevel-subsurface-monitoring\/\">&#8211;Importance of Multilevel Subsurface Monitoring<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/blank-liners\/\">405 Flute Blank Liners<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/blank-liners\/datasheet\/\">-Datasheet<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/napl-flute\/\">405 NAPL Flute<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/405-fact-flute-activated-carbon-technique\/\">405 FACT Flute Activated Carbon Technique<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/transmissivity-profiling\/\">405 Transmissivity Profiling<\/option><!-- [et_pb_line_break_holder] -->    <!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/reverse-head-profile\/\">405 Reverse Head Profile<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/reverse-head-profile\/datasheet\/\">-Datasheet<\/option><!-- [et_pb_line_break_holder] -->\t<!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/general-quote-form\/\">Get a Quote<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/Forms\/sol.php\">Send Me Info<\/option><!-- [et_pb_line_break_holder] --><option value=\"https:\/\/www.solinst.com\/instruments\/solinst-flute\/distributors\/\">Solinst Flute Distributors<\/option><!-- [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;56&#8243; admin_label=&#8221;405 Main Nav&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;242faa89-ac4f-4e46-90fe-505e8c1eab79&#8243; global_module=&#8221;5710&#8243; 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;||||false|false&#8221; global_module=&#8221;46957&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p><strong><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.solinst.com\/wp-content\/uploads\/2025\/01\/solinst-flute-logo-600w.webp\" width=\"278\" height=\"46\" alt=\"solinst flute\" class=\"wp-image-31951 alignnone size-full\" \/><\/strong><strong><\/strong><\/p>\n<p><strong>Solinst Flute<\/strong><\/p>\n<p>1091 NM-68<br \/>Alcaide, NM, USA<br \/>87511<\/p>\n<p>Tel: +1 505-852-0128<br \/>email:<a href=\"mailto:flute@solinst.com\"> flute@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:\/\/downloads.solinst.com\/free-shipping?utm_source=solinst&#038;utm_medium=WC-global-sidebar-position1&#038;utm_campaign=free-shipping&#8221; global_module=&#8221;53188&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_slide button_text=&#8221;Advantages of Using Water Flute&#8221; button_link=&#8221;https:\/\/www.solinst.com\/en-gb\/products\/solinst-flute\/405-water-flute\/?utm_source=solinst&amp;utm_medium=WC-global-sidebar-position1&amp;utm_campaign=405-water-flute&#8221; use_bg_overlay=&#8221;on&#8221; bg_overlay_color=&#8221;rgba(224,97,0,0.58)&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#F07C00&#8243; background_enable_color=&#8221;on&#8221; background_image=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2024\/12\/405-water-flute-multilevel-groundwater-system-installation.webp&#8221; background_enable_image=&#8221;on&#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; background_last_edited=&#8221;on|desktop&#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<p>&nbsp;<\/p>\n<h2>Depth Discrete Groundwater Monitoring<\/h2>\n<p><b>Reduce Costs and Field Time<\/b><\/p>\n<p>[\/et_pb_slide][\/et_pb_slider][et_pb_slider disabled_on=&#8221;on|off|off&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; link_option_url=&#8221;https:\/\/www.solinst.com\/instruments\/groundwater-samplers\/410-peristaltic-pumps\/?utm_source=solinst&#038;utm_medium=WC-global-sidebar-position2&#038;utm_campaign=410-101d&#8221; global_module=&#8221;53561&#8243; saved_tabs=&#8221;all&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_slide heading=&#8221;Automated Pumping with DrawDown Mode&#8221; button_text=&#8221;New Peristaltic Pump Mk5&#8243; button_link=&#8221;https:\/\/www.solinst.com\/instruments\/groundwater-samplers\/410-peristaltic-pumps\/?utm_source=solinst&amp;utm_medium=WC-global-sidebar-position2&amp;utm_campaign=410-101d&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_text_color=&#8221;#000000&#8243; 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\/2026\/01\/101d-water-level-drawdown-meter-2-965&#215;500-1.webp&#8221; background_enable_image=&#8221;on&#8221; background_size=&#8221;contain&#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; button_custom_margin=&#8221;||||false|false&#8221; button_custom_padding=&#8221;1px||||false|false&#8221; custom_padding=&#8221;76px||||false|false&#8221; header_text_shadow_style=&#8221;preset3&#8243; global_colors_info=&#8221;{}&#8221; sticky_transition=&#8221;on&#8221;]<\/p>\n<h2\/>\n<p>&nbsp;<\/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 _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;3d68e16c-1ed2-447f-b17f-a63c20af3cf6&#8243; locked=&#8221;off&#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;][dsm_icon_list icon_font_size=&#8221;30px&#8221; list_alignment=&#8221;flex-end&#8221; text_indent=&#8221;10px&#8221; list_alignment_tablet=&#8221;flex-end&#8221; list_alignment_phone=&#8221;flex-start&#8221; list_alignment_last_edited=&#8221;on|desktop&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;|600|||||||&#8221; link_option_url_new_window=&#8221;on&#8221; global_colors_info=&#8221;{}&#8221;][dsm_icon_list_child text=&#8221;405 Reverse Head Profile Data Sheet PDF&#8221; font_icon=&#8221;&#xf1c1;||fa||900&#8243; icon_color=&#8221;#ff8500&#8243; url=&#8221;https:\/\/www.solinst.com\/products\/data\/405-reverse-head-profile.pdf&#8221; url_new_window=&#8221;on&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221; icon_color__hover_enabled=&#8221;on|hover&#8221; icon_color__hover=&#8221;#828282&#8243; text_text_color__hover_enabled=&#8221;on|hover&#8221; text_text_color__hover=&#8221;#7a7a7a&#8221;][\/dsm_icon_list_child][\/dsm_icon_list][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;3676f7e6-7b83-4698-94ce-2cc9fa9ae43d&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner saved_specialty_column_type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2026\/01\/solinst-flute-reverse-head-profile.webp&#8221; alt=&#8221;solinst flute reverse head profile&#8221; title_text=&#8221;Solinst Flute Reverse Head Profile&#8221; align=&#8221;center&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column_inner][\/et_pb_row_inner][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; 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; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; header_2_font_size=&#8221;30px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2><strong>Reverse Head Profile<\/strong><\/h2>\n<p><strong>Model 405<\/strong><\/p>\n<p>The Reverse Head Profile is a technique developed by Solinst Flute for measuring the vertical head distribution in a borehole.<\/p>\n<p>This technique offers a quick and cost-effective way to gather information from previously measured water-producing zones. Hydraulic heads in each zone are estimated while also identifying any potential for cross-contamination between them. The measurements can typically be completed in a day or less within a standard borehole.  <\/p>\n<p>&nbsp;<\/p>\n<h2><strong>How Does the Reverse Head Profile Work?<\/strong><\/h2>\n<p>The procedure involves two main steps: the installation (eversion) of a <a href=\"https:\/\/www.solinst.com\/en-gb\/products\/solinst-flute\/405-flute-blank-liners\/\" title=\"Solinst Flute Blank Liner\"><strong>Solinst Flute Blank Liner<\/strong><\/a> into an open borehole and the subsequent removal (inversion) of the same liner. The Solinst Flute Blank Liner is designed to seal open boreholes. See the <a href=\"https:\/\/www.solinst.com\/en-gb\/products\/solinst-flute\/405-flute-blank-liners\/blank-liners-datasheet\/\" title=\"Solinst Flute Blank Liner Data Sheet\"><strong>Model 405 Blank Liner Data Sheet<\/strong><\/a> for more information.  <\/p>\n<p>During eversion, a <a href=\"https:\/\/www.solinst.com\/en-gb\/products\/solinst-flute\/405-transmissivity-profiling\/\" title=\"Transmissivity Profiling\"><strong>Transmissivity Profile<\/strong><\/a> is created, which is described in the Solinst Flute Model 405 Transmissivity Profiling Data Sheet. Transmissivity Profiling rapidly measures all significant flow paths in a borehole. <\/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; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2026\/01\/solinst-flute-simplified-reverse-head-profiling-setup.webp&#8221; alt=&#8221;solinst flute simplified reverse head profiling setup&#8221; title_text=&#8221;Solinst Flute Reverse Head Profiling Setup&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;3676f7e6-7b83-4698-94ce-2cc9fa9ae43d&#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; header_2_font_size=&#8221;30px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>The Reverse Head Profile method uses a stepwise inversion of the liner to calculate the head at each water-producing zone. As the liner\u2019s inversion uncovers each section of the borehole, the hydraulic head beneath the liner, measured by a transducer at the bottom of the borehole, is allowed to equilibrate. The individual hydraulic heads contributing to each measurement are derived from the measured transmissivity of each zone.  <\/p>\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; use_custom_gutter=&#8221;on&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;3676f7e6-7b83-4698-94ce-2cc9fa9ae43d&#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;4.27.4&#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_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2026\/01\/calculating-head-profile.webp&#8221; alt=&#8221;calculating the head profile&#8221; title_text=&#8221;Calculating the Head Profile&#8221; align=&#8221;center&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#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;4.27.2&#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; ol_font=&#8221;|700|||||||&#8221; ol_text_color=&#8221;#494949&#8243; ol_font_size=&#8221;18px&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2><strong>The inversion process: <\/strong><\/h2>\n<h3><strong>The liner stops at Z1. The first inversion uncovers a segment of the borehole wall from Z1 to Z2. <\/strong><\/h3>\n<ol>\n<li><b>Transducer<\/b><\/li>\n<li><b>Tether<\/b><\/li>\n<li><b>Liner inverted to uncover borehole wall<\/b><\/li>\n<\/ol>\n<p>&nbsp;<\/p>\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; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;3676f7e6-7b83-4698-94ce-2cc9fa9ae43d&#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; 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 class=\"font_7 wixui-rich-text__text\"><strong>Calculating the Head Profile<\/strong><\/h2>\n<p class=\"font_7 wixui-rich-text__text\">As the Solinst Flute Blank Liner is inverted from the well, it uncovers discrete borehole intervals of interest that were sealed during the Transmissivity Profile. A pressure transducer located beneath the liner in the borehole records the new steady state borehole equilibrium pressure, <strong>Bhi<\/strong>, after each interval is<br \/>uncovered. <\/p>\n<p class=\"font_7 wixui-rich-text__text\">As we already know the transmissivity of each interval and the previous steady state borehole equilibrium pressure, we can calculate the contribution of the newly uncovered borehole interval by using each new \u201cblended head\u201d beneath the liner and writing the flow equations for each increment that has been uncovered.<\/p>\n<p class=\"font_7 wixui-rich-text__text\">We define the net flow into and out of the hole to be zero, and using the transmissivity, <strong>Ti<\/strong>, measured for each increment in the hole, one has only the formation head, <strong>FH<\/strong> as an unknown for each newly exposed interval of the hole.<\/p>\n<p class=\"font_7 wixui-rich-text__text\">For the first open borehole interval beneath the liner: <strong>T1(Bh1-FH1) = 0<\/strong><\/p>\n<p class=\"font_7 wixui-rich-text__text\">Hence the formation head, FH1, equals the blended head, Bh1, in the borehole. The transmissivity for each interval, Ti, is obtained from the continuous transmissivity integral (Figure 3). <\/p>\n<p class=\"font_7 wixui-rich-text__text\">Upon inverting the liner to uncover a second increment of the<br \/>borehole:<\/p>\n<p class=\"font_7 wixui-rich-text__text\"><strong>T1(Bh2-FH1) + T2(Bh2-FH2) = 0<\/strong><\/p>\n<p class=\"font_7 wixui-rich-text__text\">Solving for FH2,<\/p>\n<p class=\"font_7 wixui-rich-text__text\"><strong>FH2 = [ T1(Bh2-FH1) + T2 Bh2 ]\/T2<\/strong><\/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; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2026\/01\/continuous-transmissivity-integral.webp&#8221; alt=&#8221;continuous transmissivity integral&#8221; title_text=&#8221;Continuous Transmissivity Integral&#8221; align=&#8221;center&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p class=\"font_7 wixui-rich-text__text\" style=\"text-align: center;\"><em>Figure 3. Continuous Transmissivity Integral <\/em><\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;@ET-DC@eyJkeW5hbWljIjp0cnVlLCJjb250ZW50IjoicG9zdF9saW5rX3VybF9wYWdlIiwic2V0dGluZ3MiOnsicG9zdF9pZCI6IjU1ODIifX0=@&#8221; button_text=&#8221;Get Quote&#8221; admin_label=&#8221;405 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; custom_margin=&#8221;20px||||false|false&#8221; custom_padding=&#8221;6px|47px|6px|47px|false|false&#8221; global_module=&#8221;5612&#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;3676f7e6-7b83-4698-94ce-2cc9fa9ae43d&#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;e910b435-fe18-45d2-b351-bda808b1a267&#8243; global_colors_info=&#8221;{}&#8221;]<\/p>\n<div class=\"boxColumn\">\n<div class=\"boxContent\">\n<h3><strong>Note:  <\/strong><\/h3>\n<p class=\"font_7 wixui-rich-text__text\"><span class=\"wixui-rich-text__text\">For each new position, a new blended head, Bhi, is measured.<\/span><\/p>\n<\/div>\n<\/div>\n<p>[\/et_pb_text][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]Solving for the formation head each time the liner is inverted allows theoretical determination of the head distribution in the formation while removing the same liner that was used to measure the transmissivity and to seal the borehole.<\/p>\n<p>The equation for solution of the formation head of the current interval, i, is:<\/p>\n<p><strong>FHi = [ T1(Bhi-FH1) + T2(Bhi-FH2) + \u2026\u2026. +Ti Bhi ]\/Ti<\/strong><\/p>\n<p>Where Ti is the transmissivity of the ith interval in the hole determined from the liner continuous transmissivity profile, FHi is the calculated formation head of the ith interval, and Bhi is the blended head measured in the borehole after each new ith interval is uncovered. Watching the transducer measurement beneath the liner allows one to judge when a steady-state head has been achieved beneath the liner.[\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][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; 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; 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 style=\"text-align: left;\"><strong>Reverse Head Profile Results<\/strong><\/h2>\n<p><strong>Comparison of RHP to measured<br \/>head profile on same day<\/strong><\/p>\n<p><strong>Water table in each interval (m bgs)<\/strong><\/p>\n<p>Two Reverse Head Profiles conducted for a 30-Metre Borehole. The blue dots were measured from the 1st RHP values, while the black dots were measured during the 2nd RHP. Note that the vertical red line is the original blended head in the borehole and the red plot point at 30-Metres BGS denotes a measurement taken in a very low transmissive zone and therefore is a less reliable head calculation.  <\/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; global_colors_info=&#8221;{}&#8221;][et_pb_image src=&#8221;https:\/\/www.solinst.com\/wp-content\/uploads\/2026\/01\/comparing-2-reverse-head-profiles-in-one-day.webp&#8221; alt=&#8221;comparison of two reverse head profiles measured on the same day&#8221; title_text=&#8221;Comparison of Two Reverse Head Profiles Measured On The Same Day&#8221; align=&#8221;center&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_image][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;3676f7e6-7b83-4698-94ce-2cc9fa9ae43d&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column_inner saved_specialty_column_type=&#8221;3_4&#8243; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_heading title=&#8221;Related Products&#8221; _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; title_level=&#8221;h2&#8243; title_font=&#8221;|700|||||||&#8221; title_font_size=&#8221;22px&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_heading][\/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;1933&#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\/2024\/10\/703-waterloo-emitter-bioremediation-device-1-500&#215;500-1.webp&#8221; alt=&#8221;solinst model 703 waterloo emitter bioremediation device&#8221; title_text=&#8221;Solinst Model 703 Waterloo Emitter Bioremediation Device&#8221; url=&#8221;https:\/\/www.solinst.com\/products\/enhanced-biodegradation\/703-waterloo-emitters\/index.php&#8221; _builder_version=&#8221;4.27.2&#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\/enhanced-biodegradation\/703-waterloo-emitters\/index.php&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3><strong><a href=\"https:\/\/www.solinst.com\/products\/enhanced-biodegradation\/703-waterloo-emitters\/index.php\" title=\"Waterloo Emitter Ideal for Enhanced Bioremediation Applications\">Enhanced Bioremediation<\/a><\/strong><\/h3>\n<p>The <strong><a href=\"https:\/\/www.solinst.com\/products\/enhanced-biodegradation\/703-waterloo-emitters\/index.php\" title=\"Solinst Waterloo Emitter\">Waterloo Emitter\u2122<\/a><\/strong>is a simple, low-cost device designed for the bioremediation of contaminated groundwater. It enables oxygen or other amendments to diffuse through silicone or LDPE tubing in a controlled, uniform manner. Ideal for aerobic bioremediation of MTBE and BTEX, with minimal maintenance required.  <\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;https:\/\/www.solinst.com\/products\/enhanced-biodegradation\/703-waterloo-emitters\/index.php&#8221; button_text=&#8221;Waterloo Emitter&#8221; button_alignment=&#8221;right&#8221; button_alignment_tablet=&#8221;center&#8221; button_alignment_phone=&#8221;center&#8221; button_alignment_last_edited=&#8221;on|phone&#8221; _builder_version=&#8221;4.27.2&#8243; _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; button_text_size_tablet=&#8221;18px&#8221; button_text_size_phone=&#8221;16px&#8221; button_text_size_last_edited=&#8221;on|phone&#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;1934&#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\/2024\/10\/408M-micro-double-valve-pump-1-500&#215;500-1.webp&#8221; alt=&#8221;solinst 408m micro double valve pump&#8221; title_text=&#8221;Solinst 408M Micro Double Valve Pump&#8221; url=&#8221;https:\/\/www.solinst.com\/products\/groundwater-samplers\/408m-micro-double-valve-pumps\/&#8221; _builder_version=&#8221;4.27.2&#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\/groundwater-samplers\/408m-micro-double-valve-pumps\/&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3><strong><a href=\"https:\/\/www.solinst.com\/products\/groundwater-samplers\/408m-micro-double-valve-pumps\/\">3\/8&#8243; Diameter Flexible Pneumatic Pump<\/a><\/strong><\/h3>\n<p>The <a href=\"https:\/\/www.solinst.com\/products\/groundwater-samplers\/408m-micro-double-valve-pumps\/\" title=\"408M Micro Double Valve Pump\"><strong>Micro Double Valve Pump<\/strong><\/a> has a remarkably small and flexible design. At 3\/8&#8243; (10 mm) diameter it is small enough to sample groundwater from channels of a CMT System. <\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;https:\/\/www.solinst.com\/products\/groundwater-samplers\/408m-micro-double-valve-pumps\/&#8221; button_text=&#8221;Micro Double Valve Pump&#8221; button_alignment=&#8221;right&#8221; button_alignment_tablet=&#8221;center&#8221; button_alignment_phone=&#8221;center&#8221; button_alignment_last_edited=&#8221;on|phone&#8221; _builder_version=&#8221;4.27.2&#8243; _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; button_text_size_tablet=&#8221;18px&#8221; button_text_size_phone=&#8221;16px&#8221; button_text_size_last_edited=&#8221;on|phone&#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;4.27.4&#8243; _module_preset=&#8221;default&#8221; border_width_bottom=&#8221;1px&#8221; border_color_bottom=&#8221;#d3d3d3&#8243; global_module=&#8221;1935&#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\/2024\/10\/410-peristaltic-pump-1-500&#215;500-1.webp&#8221; alt=&#8221;solinst model 410 peristaltic pumps&#8221; title_text=&#8221;Solinst Model 410 Peristaltic Pumps&#8221; url=&#8221;https:\/\/www.solinst.com\/en-gb\/groundwater-samplers\/410-peristaltic-pumps\/&#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\/en-gb\/groundwater-samplers\/410-peristaltic-pumps\/&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h3><strong><a href=\"https:\/\/www.solinst.com\/en-gb\/groundwater-samplers\/410-peristaltic-pumps\/\" title=\"Peristaltic Pumps\">Rugged Peristaltic Pump<\/a><\/strong><\/h3>\n<p>Compact, lightweight, and water-resistant, the <a href=\"https:\/\/www.solinst.com\/en-gb\/groundwater-samplers\/410-peristaltic-pumps\/\" title=\"Peristaltic Pumps\"><strong>Solinst Peristaltic Pump<\/strong><\/a> is designed for field use. One easy-access control allows various speeds and reversible flow. Ideal for shallow water and vapour sampling.[\/et_pb_text][et_pb_button button_url=&#8221;https:\/\/www.solinst.com\/en-gb\/groundwater-samplers\/410-peristaltic-pumps\/&#8221; button_text=&#8221;Peristaltic Pump&#8221; button_alignment=&#8221;right&#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_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; button_text_size_tablet=&#8221;18px&#8221; button_text_size_phone=&#8221;16px&#8221; button_text_size_last_edited=&#8221;on|phone&#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;82141&#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\/2024\/10\/103-tag-line-1-500&#215;500-1.webp&#8221; alt=&#8221;solinst model 103 tag line for accurate pump and bailer deployments and accurate measuring of backfill layers during well construction&#8221; title_text=&#8221;Solinst Model 103 Tag Line For Accurate Pump And Bailer Deployments And Accurate Measuring Of Backfill Layers During Well Construction&#8221; url=&#8221;https:\/\/www.solinst.com\/products\/level-measurement-devices\/103-tag-line\/&#8221; _builder_version=&#8221;4.27.2&#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><strong><a href=\"https:\/\/www.solinst.com\/products\/level-measurement-devices\/103-tag-line\/\" title=\"103 Tag Line\">Tag Line &#8211; Rugged, Simple, Convenient<\/a><\/strong><\/h3>\n<p>The <strong><a href=\"https:\/\/www.solinst.com\/products\/level-measurement-devices\/103-tag-line\/\" title=\"103 Tag Line\">Tag Line<\/a><\/strong> uses a weight attached to laser-marked cable, mounted on a sturdy reel. Convenient for measuring depths during monitoring well construction. <\/p>\n<p>[\/et_pb_text][et_pb_button button_url=&#8221;https:\/\/www.solinst.com\/products\/level-measurement-devices\/103-tag-line\/&#8221; button_text=&#8221;Versatile Tag Line&#8221; button_alignment=&#8221;right&#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;20px&#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; button_text_size_tablet=&#8221;18px&#8221; button_text_size_phone=&#8221;16px&#8221; button_text_size_last_edited=&#8221;on|desktop&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_button][\/et_pb_column_inner][\/et_pb_row_inner][\/et_pb_column][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Adobe Analytics Code&#8221; _builder_version=&#8221;4.27.0&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;||4px|||&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.2&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.0&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_code admin_label=&#8221;AA Code for this page&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<!-- SiteCatalyst code version: H.21. 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All Rights Reserved More info available at http:\/\/www.omniture.com --><!-- [et_pb_line_break_holder] --><script language=\"JavaScript\" type=\"text\/javascript\" src=\"\/\/www.solinst.com\/s_code.js\"><\/script><!-- [et_pb_line_break_holder] --><script language=\"JavaScript\" type=\"text\/javascript\"><!--<!-- [et_pb_line_break_holder] -->s.pageName=\"405 reverse head profile datasheet\"<!-- [et_pb_line_break_holder] -->s.server=\"\"<!-- [et_pb_line_break_holder] -->s.channel=\"products\"<!-- [et_pb_line_break_holder] -->s.pageType=\"\"<!-- [et_pb_line_break_holder] -->s.prop1=\"solinst flute\"<!-- [et_pb_line_break_holder] -->s.prop2=\"405 reverse head profile\"<!-- [et_pb_line_break_holder] -->s.prop3=\"405 reverse head profile datasheet\"<!-- [et_pb_line_break_holder] -->s.prop4=\"\"<!-- [et_pb_line_break_holder] -->s.prop5=\"\"<!-- [et_pb_line_break_holder] -->s.prop6=\"\"<!-- [et_pb_line_break_holder] -->s.prop7=\"\"<!-- [et_pb_line_break_holder] -->s.prop8=\"\"<!-- [et_pb_line_break_holder] -->s.prop9=\"\"<!-- [et_pb_line_break_holder] -->s.prop10=\"\"<!-- [et_pb_line_break_holder] -->s.prop11=\"\"<!-- [et_pb_line_break_holder] -->s.prop12=\"\"<!-- [et_pb_line_break_holder] -->s.prop13=\"\"<!-- [et_pb_line_break_holder] -->s.prop14=\"\"<!-- [et_pb_line_break_holder] -->s.prop15=\"\"<!-- [et_pb_line_break_holder] -->s.prop16=\"\"<!-- [et_pb_line_break_holder] -->s.prop17=\"\"<!-- [et_pb_line_break_holder] -->s.prop18=\"\"<!-- [et_pb_line_break_holder] -->s.prop19=\"\"<!-- [et_pb_line_break_holder] -->s.prop20=\"\"<!-- [et_pb_line_break_holder] -->s.prop21=\"\"<!-- [et_pb_line_break_holder] -->s.prop22=\"\"<!-- [et_pb_line_break_holder] -->s.prop23=\"\"<!-- [et_pb_line_break_holder] -->s.prop24=\"\"<!-- [et_pb_line_break_holder] -->s.prop25=\"\"<!-- [et_pb_line_break_holder] -->s.prop26=\"\"<!-- [et_pb_line_break_holder] -->s.prop27=\"\"<!-- [et_pb_line_break_holder] -->s.prop28=\"\"<!-- [et_pb_line_break_holder] -->s.prop29=\"\"<!-- [et_pb_line_break_holder] -->s.prop30=\"\"<!-- [et_pb_line_break_holder] -->s.prop31=\"\"<!-- [et_pb_line_break_holder] -->s.prop32=\"\"<!-- [et_pb_line_break_holder] -->s.prop33=\"\"<!-- [et_pb_line_break_holder] -->s.hier1=\"solinst:products:solinst flute:405 reverse head profile:405 reverse head profile datasheet\"<!-- [et_pb_line_break_holder] --><!-- [et_pb_line_break_holder] -->\/* Conversion Variables *\/<!-- [et_pb_line_break_holder] -->s.campaign=\"\"<!-- [et_pb_line_break_holder] -->s.events=\"\"<!-- [et_pb_line_break_holder] -->s.eVar1=\"\"<!-- [et_pb_line_break_holder] -->s.eVar2=\"\"<!-- [et_pb_line_break_holder] -->s.eVar3=\"\"<!-- [et_pb_line_break_holder] -->s.eVar4=\"\"<!-- [et_pb_line_break_holder] -->s.eVar5=\"\"<!-- [et_pb_line_break_holder] -->s.eVar6=\"\"<!-- [et_pb_line_break_holder] -->s.eVar7=\"\"<!-- [et_pb_line_break_holder] -->s.eVar8=\"\"<!-- [et_pb_line_break_holder] -->s.eVar9=\"\"<!-- [et_pb_line_break_holder] -->s.eVar10=\"\"<!-- [et_pb_line_break_holder] -->s.eVar11=\"\"<!-- [et_pb_line_break_holder] -->s.eVar12=\"\"<!-- [et_pb_line_break_holder] -->s.eVar13=\"\"<!-- [et_pb_line_break_holder] -->s.eVar14=\"\"<!-- [et_pb_line_break_holder] -->s.eVar15=\"\"<!-- [et_pb_line_break_holder] -->s.eVar16=\"\"<!-- [et_pb_line_break_holder] -->s.eVar17=\"\"<!-- [et_pb_line_break_holder] -->s.state=\"\"<!-- [et_pb_line_break_holder] -->s.zip=\"\"<!-- [et_pb_line_break_holder] -->\/************* DO NOT ALTER ANYTHING BELOW THIS LINE ! **************\/<!-- [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>Reverse Head Profile Data Sheet<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 Flute 1091 NM-68Alcaide, NM, USA87511 Tel: +1 505-852-0128email: flute@solinst.com &nbsp; Depth Discrete Groundwater Monitoring Reduce Costs and Field Time &nbsp; &nbsp; &nbsp;<div class=\"et_pb_module dsm_icon_list dsm_icon_list_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<ul class=\"dsm_icon_list_items dsm_icon_list_ltr_direction dsm_icon_list_layout_vertical\"><li class=\"dsm_icon_list_child dsm_icon_list_child_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<a href=\"https:\/\/www.solinst.com\/products\/data\/405-reverse-head-profile.pdf\" target=\"_blank\"><span class=\"dsm_icon_list_wrapper\"><span class=\"dsm_icon_list_icon\">\uf1c1<\/span><\/span><span class=\"dsm_icon_list_text\">405 Reverse Head Profile Data Sheet PDF<\/span><\/a>\n\t\t\t<\/li><\/ul>\n\t\t\t\t<\/div>\n\t\t\t<\/div>Reverse Head Profile Model 405 The Reverse Head Profile is a technique developed by Solinst Flute for measuring the vertical head distribution in a borehole. This technique offers a quick and cost-effective way to gather information from previously measured water-producing zones. Hydraulic heads in each zone are estimated while also identifying any potential for cross-contamination between them. The measurements can typically be completed in a day or less within a standard borehole. &nbsp; How Does the Reverse Head Profile Work? The procedure involves two main steps: the installation (eversion) of a Solinst Flute Blank Liner into an open borehole and the subsequent removal (inversion) of the same liner. The Solinst Flute Blank Liner is designed to seal open boreholes. See the Model 405 Blank Liner Data Sheet for more information. During eversion, a Transmissivity Profile is created, which is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":221492,"parent":220414,"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":[433],"class_list":["post-221490","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>Solinst Flute Reverse Head Profile<\/title>\n<meta name=\"description\" content=\"Measure vertical hydraulic head distribution and identify cross-flow potential. The Reverse Head Profile provides cost-effective, discrete zone data in one day.\" \/>\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-flute\/405-reverse-head-profile\/reverse-head-profile-data-sheet\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Reverse Head Profile Data Sheet\" \/>\n<meta property=\"og:description\" content=\"Measure vertical hydraulic head distribution and identify cross-flow potential. Learn how the Reverse Head Profile provides cost-effective, discrete zone data in one day.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.solinst.com\/en-gb\/products\/solinst-flute\/405-reverse-head-profile\/reverse-head-profile-data-sheet\/\" \/>\n<meta property=\"og:site_name\" content=\"Solinst Groundwater and Surface Water Monitoring Instrumentation, Water Level Meters, Interface Meters, Dataloggers\" \/>\n<meta property=\"article:modified_time\" content=\"2026-05-07T22:36:22+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.solinst.com\/wp-content\/uploads\/2026\/02\/featureimage-405-reverse-head-ds.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"20 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.solinst.com\\\/en-gb\\\/products\\\/solinst-flute\\\/405-reverse-head-profile\\\/reverse-head-profile-data-sheet\\\/\",\"url\":\"https:\\\/\\\/www.solinst.com\\\/en-gb\\\/products\\\/solinst-flute\\\/405-reverse-head-profile\\\/reverse-head-profile-data-sheet\\\/\",\"name\":\"Solinst Flute Reverse Head Profile\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.solinst.com\\\/en-gb\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.solinst.com\\\/en-gb\\\/products\\\/solinst-flute\\\/405-reverse-head-profile\\\/reverse-head-profile-data-sheet\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.solinst.com\\\/en-gb\\\/products\\\/solinst-flute\\\/405-reverse-head-profile\\\/reverse-head-profile-data-sheet\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.solinst.com\\\/wp-content\\\/uploads\\\/2026\\\/02\\\/featureimage-405-reverse-head-ds.jpg\",\"datePublished\":\"2026-01-29T19:47:48+00:00\",\"dateModified\":\"2026-05-07T22:36:22+00:00\",\"description\":\"Measure vertical hydraulic head distribution and identify cross-flow potential. 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