{"id":27042,"date":"2026-07-30T14:33:58","date_gmt":"2026-07-30T21:33:58","guid":{"rendered":"https:\/\/www.vernier.com\/til\/?p=27042"},"modified":"2026-08-10T08:35:28","modified_gmt":"2026-08-10T15:35:28","slug":"why-is-my-go-direct-dissolved-oxygen-probe-read-zero","status":"publish","type":"post","link":"https:\/\/www.vernier.com\/til\/27042","title":{"rendered":"Why is my Go Direct Dissolved Oxygen Probe reading zero?"},"content":{"rendered":"<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\">In the situation that your <a href=\"\/product\/go-direct-optical-dissolved-oxygen-probe\/\">Go Direct<sup>&reg;<\/sup> Optical Dissolved Oxygen Probe<\/a> (<nobr>GDX-ODO<\/nobr>) stops reading any values and just reads 0 mg\/L, first try going through the calibration procedure to reset the sensor.<\/p>\n<\/div>\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/www.vernier.com\/wp-content\/uploads\/2019\/11\/product.gdx-odo._hero.001-scaled.jpg\" alt=\"\"\/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">To do a reset, follow the instructions below.<\/h3>\n<ol class=\"wp-block-list\">\n<li>Fill the storage bottle to the top of the sponge with distilled water.<\/li>\n<li>Insert the probe into the storage bottle and make sure it is positioned vertically so that the tip is not in contact with the sponge or water.<\/li>\n<li>Start the software and identify your probe, if necessary.<\/li>\n<li>Keep the probe in a vertical position for a minimum of 60 seconds.<\/li>\n<li>Click or tap the sensor meter for the channel you want to reset (DO Concentration or DO Saturation).<\/li>\n<li>Choose calibrate, and follow the instructions on the screen.<\/li>\n<\/ol>\n<p class=\"wp-block-paragraph\">If resetting the calibration does not resolve the issue, contact Vernier Support at <a href=\"mailto:support@vernier.com\">support@vernier.com<\/a> or <a href=\"tel:18888376437\">1-888-837-6437<\/a> to set up a Return Merchandise Authorization (RMA) for your sensor to be evaluated.<\/p>\n<p class=\"wp-block-paragraph\">","protected":false},"excerpt":{"rendered":"<p>In the situation that your stops reading any values and just reads 0 mg\/L, first try going through the calibration procedure to reset the sensor&#8230;.<\/p>\n","protected":false},"author":41204,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[6956,7084,4972,5206],"class_list":["post-27042","post","type-post","status-publish","format-standard","hentry","tag-gdx-odo","tag-gdxodo","tag-odo","tag-optical-do"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/27042","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/users\/41204"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/comments?post=27042"}],"version-history":[{"count":3,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/27042\/revisions"}],"predecessor-version":[{"id":27087,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/27042\/revisions\/27087"}],"wp:attachment":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/media?parent=27042"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/categories?post=27042"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/tags?post=27042"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}