{"id":32590,"date":"2026-03-12T11:33:43","date_gmt":"2026-03-12T10:33:43","guid":{"rendered":"https:\/\/rls-wacon.de\/produkt\/caldur-nitrate-colorimetric\/"},"modified":"2026-03-12T11:33:43","modified_gmt":"2026-03-12T10:33:43","slug":"caldur-nitrate-colorimetric","status":"publish","type":"product","link":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-nitrate-colorimetric\/","title":{"rendered":"Caldur\u00ae Nitrate &#8211; Colorimetric"},"content":{"rendered":"<h2>CALDUR\u00ae Nitrate Test Set &#8211; Colorimetric<\/h2>\n<h3>What is nitrate measured for?<\/h3>\n<p>Nitrate (NO\u2083-) is one of the most important parameters in drinking water analysis. It enters the groundwater primarily through agricultural fertilization and wastewater discharges. <strong>The limit value for drinking water is 50 mg\/l NO\u2083-<\/strong> (Drinking Water Ordinance). <\/p>\n<p>Elevated nitrate concentrations are harmful to health, as nitrate can be converted to nitrite in the body, which impairs the oxygen supply. A low nitrate level is particularly important for infants and small children. <\/p>\n<p>In environmental analysis, nitrate is an Reagent for the pollution of water bodies by nutrients and can contribute to eutrophication.<\/p>\n<h3>How does the test set work?<\/h3>\n<p>The CALDUR\u00ae Nitrate Test Set &#8211; Colorimetric is based on the NED method (N-(1-naphthyl)-ethylenediamine). After adding two reagents to the water sample, a characteristic pink to violet coloration develops within 6 minutes, the intensity of which is proportional to the nitrate concentration. <\/p>\n<p>The measured value is determined by direct color comparison with a supplied color chart.<\/p>\n<h3>Advantages of the CALDUR\u00ae test set<\/h3>\n<ul class=\"feature-list\">\n<li>Practical measuring range 1 &#8211; 50 mg\/l NO\u2083-\n<p style=\"text-indent: 30px; font-style: italic;\">Covers the entire drinking water range up to the limit value<\/p>\n<\/li>\n<li>200 provisions per set\n<p style=\"text-indent: 30px; font-style: italic;\">Particularly economical for regular checks<\/p>\n<\/li>\n<li>Quick analysis in just 6 minutes\n<p style=\"text-indent: 30px; font-style: italic;\">Results directly on site<\/p>\n<\/li>\n<li>Proven NED method\n<p style=\"text-indent: 30px; font-style: italic;\">Reliable and reproducible results<\/p>\n<\/li>\n<li>Robust plastic housing with hinged lid\n<p style=\"text-indent: 30px; font-style: italic;\">Safe transportation and protection of reagents<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>CALDUR\u00ae Nitrate Test Set &#8211; Colorimetric What is nitrate measured for? Nitrate (NO\u2083-) is one of the most important parameters in drinking water analysis. It enters the groundwater primarily through agricultural fertilization and wastewater discharges. The limit value for drinking water is 50 mg\/l NO\u2083- (Drinking Water Ordinance). Elevated nitrate concentrations are harmful to health, [&hellip;]<\/p>\n","protected":false},"featured_media":32591,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[637,723,633],"product_tag":[],"class_list":{"0":"post-32590","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-colorimetric-method","7":"product_cat-nitrate","8":"product_cat-testsets-caldur-en","10":"first","11":"instock","12":"shipping-taxable","13":"purchasable","14":"product-type-variable"},"exclude_global_add_ons":[],"addons":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>CALDUR\u00ae Nitrate Test Set - Colorimetric<\/title>\n<meta name=\"description\" content=\"Measure nitrate in water with the CALDUR\u00ae test set. NED method, 1-50 mg\/l NO3, 200 determinations. 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