{"id":4072,"date":"2014-07-17T10:00:57","date_gmt":"2014-07-17T15:00:57","guid":{"rendered":"https:\/\/www.coleparmer.com\/blog\/?p=4072"},"modified":"2019-09-24T11:21:33","modified_gmt":"2019-09-24T17:21:33","slug":"ten-good-lab-practices-when-testing-for-dissolved-oxygen","status":"publish","type":"post","link":"https:\/\/www.coleparmer.com\/blog\/ten-good-lab-practices-when-testing-for-dissolved-oxygen\/","title":{"rendered":"Ten Good Lab Practices When Testing for Dissolved Oxygen"},"content":{"rendered":"

\"DissolvedOxygenImage\"<\/a>When you measure how much oxygen is in dissolved water<\/a> to test for water quality, you\u2019ll want to follow some basic suggestions to maximize your efforts. The following tips will help you use your instruments properly and assess your readings correctly. For more information on testing dissolved oxygen, contact our Application Specialists<\/a>.<\/p>\n

    \n
  1. To limit evaporation of the electrolyte solution, store your DO probe in a moist atmosphere<\/li>\n
  2. After each test, rinse probe membrane with distilled water<\/li>\n
  3. When you calibrate the probe and meter, make sure it is at temperatures closest to the sample temperature<\/li>\n
  4. Always ensure that the probe is submersed deep enough to cover the membrane and automatic temperature compensation element<\/li>\n
  5. For at least 15 cm\/min, stir your sample to avoid oxygen starvation at the membrane<\/li>\n
  6. Calibrate your meter with a zero oxygen solution<\/li>\n
  7. Keep in mind that oxygen measurements are pressure- and altitude-dependent<\/li>\n
  8. Know your sample\u2019s salinity because it affects your reading<\/li>\n
  9. Allow 15 to 30 minutes to polarize polarographic probes<\/li>\n
  10. Remove all air bubbles from under the membrane surface when changing membranes<\/li>\n<\/ol>\n

    See our selection of <\/em>Dissolved Oxygen Meters<\/em> and <\/em>Dissolved Oxygen Probes and Sensors<\/em><\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

    When you measure how much oxygen is in dissolved water to test for water quality, you\u2019ll want to follow some basic suggestions to maximize your efforts. The following tips will help you use your instruments…<\/p>\n","protected":false},"author":20,"featured_media":4074,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,15,24],"tags":[445,447],"class_list":["post-4072","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-helpful-technical-info","category-oakton-instruments","category-water-sampling","tag-dissolved-oxygen","tag-dissolved-oxygen-meters"],"yoast_head":"\nTen Good Lab Practices When Testing for Dissolved Oxygen | from Cole-Parmer Blog<\/title>\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.coleparmer.de\/blog\/ten-good-lab-practices-when-testing-for-dissolved-oxygen\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ten Good Lab Practices When Testing for Dissolved Oxygen | from Cole-Parmer Blog\" \/>\n<meta property=\"og:description\" content=\"When you measure how much oxygen is in dissolved water to test for water quality, you\u2019ll want to follow some basic suggestions to maximize your efforts. 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