{"id":32146,"date":"2026-03-12T11:34:43","date_gmt":"2026-03-12T10:34:43","guid":{"rendered":"https:\/\/rls-wacon.de\/produkt\/caldur-phosphate-lr-colorimetric\/"},"modified":"2026-03-12T11:34:43","modified_gmt":"2026-03-12T10:34:43","slug":"caldur-phosphate-lr-colorimetric","status":"publish","type":"product","link":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/","title":{"rendered":"Caldur\u00ae Phosphate LR &#8211; Colorimetric"},"content":{"rendered":"<h2>CALDUR\u00ae Phosphate LR Test Set &#8211; Colorimetric<\/h2>\n<h3>What is phosphate measured for?<\/h3>\n<p>Phosphate (PO\u2084\u00b3-) is an essential nutrient, but in high concentrations it leads to the eutrophication of water bodies. <strong>Excessive phosphate inputs<\/strong> from fertilizers, wastewater or detergents promote excessive algae growth and can severely disrupt the ecological balance. <\/p>\n<p>In drinking water treatment, phosphate is specifically dosed as corrosion protection to protect pipes from limescale deposits and corrosion. The optimum dosing range is typically 2-5 mg\/l PO\u2084\u00b3-. <\/p>\n<p>Phosphate elimination is a central process step in wastewater treatment plants. Regular monitoring of the phosphate concentration in the effluent ensures compliance with the limit values. <\/p>\n<h3>How does the test set work?<\/h3>\n<p>The CALDUR\u00ae Phosphate LR test kit is based on the molybdate blue method. Phosphate reacts with molybdate in an acidic solution to form phosphomolybdenum blue. The resulting blue coloration is proportional to the phosphate concentration.  <\/p>\n<p>The measured value is determined by direct color comparison with a 6-stage color chart supplied.<\/p>\n<h3>Advantages of the CALDUR\u00ae test set<\/h3>\n<ul class=\"feature-list\">\n<li>Measuring range 0.25 &#8211; 10 mg\/l PO\u2084\u00b3-\n<p style=\"text-indent: 30px; font-style: italic;\">Ideal for drinking water, waste water and water monitoring<\/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 5 minutes\n<p style=\"text-indent: 30px; font-style: italic;\">Immediate results on site<\/p>\n<\/li>\n<li>Easy handling with 2 reagents\n<p style=\"text-indent: 30px; font-style: italic;\">No measuring devices required<\/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 Phosphate LR Test Set &#8211; Colorimetric What is phosphate measured for? Phosphate (PO\u2084\u00b3-) is an essential nutrient, but in high concentrations it leads to the eutrophication of water bodies. Excessive phosphate inputs from fertilizers, wastewater or detergents promote excessive algae growth and can severely disrupt the ecological balance. In drinking water treatment, phosphate is [&hellip;]<\/p>\n","protected":false},"featured_media":32150,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[637,750,633],"product_tag":[],"class_list":{"0":"post-32146","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-colorimetric-method","7":"product_cat-phosphate","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 Phosphate LR Test Set - Colorimetric<\/title>\n<meta name=\"description\" content=\"Measure phosphate in water with CALDUR\u00ae test set LR. 0.25-10 mg\/l PO\u2084\u00b3-, 200 determinations. For drinking water, waste water and water bodies!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Caldur\u00ae Phosphate LR - Colorimetric\" \/>\n<meta property=\"og:description\" content=\"Measure phosphate in water with CALDUR\u00ae test set LR. 0.25-10 mg\/l PO\u2084\u00b3-, 200 determinations. For drinking water, waste water and water bodies!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/\" \/>\n<meta property=\"og:site_name\" content=\"RLS Wacon analytics\" \/>\n<meta property=\"og:image\" content=\"https:\/\/rls-wacon.de\/wp-content\/uploads\/2026\/03\/31-07241020-20Testset20Phosphat20LR.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2067\" \/>\n\t<meta property=\"og:image:height\" content=\"1378\" \/>\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=\"Availability\" \/>\n\t<meta name=\"twitter:data1\" content=\"In stock\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/en\\\/produkt\\\/caldur-phosphate-lr-colorimetric\\\/\",\"url\":\"https:\\\/\\\/rls-wacon.de\\\/en\\\/produkt\\\/caldur-phosphate-lr-colorimetric\\\/\",\"name\":\"CALDUR\u00ae Phosphate LR Test Set - Colorimetric\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/en\\\/produkt\\\/caldur-phosphate-lr-colorimetric\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/en\\\/produkt\\\/caldur-phosphate-lr-colorimetric\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/rls-wacon.de\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/31-07241020-20Testset20Phosphat20LR.jpg\",\"datePublished\":\"2026-03-12T10:34:43+00:00\",\"description\":\"Measure phosphate in water with CALDUR\u00ae test set LR. 0.25-10 mg\\\/l PO\u2084\u00b3-, 200 determinations. For drinking water, waste water and water bodies!\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/en\\\/produkt\\\/caldur-phosphate-lr-colorimetric\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/rls-wacon.de\\\/en\\\/produkt\\\/caldur-phosphate-lr-colorimetric\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/en\\\/produkt\\\/caldur-phosphate-lr-colorimetric\\\/#primaryimage\",\"url\":\"https:\\\/\\\/rls-wacon.de\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/31-07241020-20Testset20Phosphat20LR.jpg\",\"contentUrl\":\"https:\\\/\\\/rls-wacon.de\\\/wp-content\\\/uploads\\\/2026\\\/03\\\/31-07241020-20Testset20Phosphat20LR.jpg\",\"width\":2067,\"height\":1378},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/en\\\/produkt\\\/caldur-phosphate-lr-colorimetric\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Startseite\",\"item\":\"https:\\\/\\\/rls-wacon.de\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\\\/\\\/rls-wacon.de\\\/shop\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Caldur\u00ae Phosphate LR &#8211; Colorimetric\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/#website\",\"url\":\"https:\\\/\\\/rls-wacon.de\\\/\",\"name\":\"RLS Wacon analytics GmbH\",\"description\":\"Experts for water monitoring\",\"publisher\":{\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/rls-wacon.de\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/#organization\",\"name\":\"RLS Wacon analytics GmbH\",\"url\":\"https:\\\/\\\/rls-wacon.de\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/rls-wacon.de\\\/wp-content\\\/uploads\\\/2022\\\/10\\\/RLSWacon-analytics-Logo-BR-RZ-9_17-768x1591.png\",\"contentUrl\":\"https:\\\/\\\/rls-wacon.de\\\/wp-content\\\/uploads\\\/2022\\\/10\\\/RLSWacon-analytics-Logo-BR-RZ-9_17-768x1591.png\",\"width\":768,\"height\":159,\"caption\":\"RLS Wacon analytics GmbH\"},\"image\":{\"@id\":\"https:\\\/\\\/rls-wacon.de\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<meta property=\"og:availability\" content=\"instock\" \/>\n<meta property=\"product:availability\" content=\"instock\" \/>\n<meta property=\"product:condition\" content=\"new\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"CALDUR\u00ae Phosphate LR Test Set - Colorimetric","description":"Measure phosphate in water with CALDUR\u00ae test set LR. 0.25-10 mg\/l PO\u2084\u00b3-, 200 determinations. For drinking water, waste water and water bodies!","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/","og_locale":"en_US","og_type":"article","og_title":"Caldur\u00ae Phosphate LR - Colorimetric","og_description":"Measure phosphate in water with CALDUR\u00ae test set LR. 0.25-10 mg\/l PO\u2084\u00b3-, 200 determinations. For drinking water, waste water and water bodies!","og_url":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/","og_site_name":"RLS Wacon analytics","og_image":[{"width":2067,"height":1378,"url":"https:\/\/rls-wacon.de\/wp-content\/uploads\/2026\/03\/31-07241020-20Testset20Phosphat20LR.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Availability":"In stock"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/","url":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/","name":"CALDUR\u00ae Phosphate LR Test Set - Colorimetric","isPartOf":{"@id":"https:\/\/rls-wacon.de\/#website"},"primaryImageOfPage":{"@id":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/#primaryimage"},"image":{"@id":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/#primaryimage"},"thumbnailUrl":"https:\/\/rls-wacon.de\/wp-content\/uploads\/2026\/03\/31-07241020-20Testset20Phosphat20LR.jpg","datePublished":"2026-03-12T10:34:43+00:00","description":"Measure phosphate in water with CALDUR\u00ae test set LR. 0.25-10 mg\/l PO\u2084\u00b3-, 200 determinations. For drinking water, waste water and water bodies!","breadcrumb":{"@id":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/#primaryimage","url":"https:\/\/rls-wacon.de\/wp-content\/uploads\/2026\/03\/31-07241020-20Testset20Phosphat20LR.jpg","contentUrl":"https:\/\/rls-wacon.de\/wp-content\/uploads\/2026\/03\/31-07241020-20Testset20Phosphat20LR.jpg","width":2067,"height":1378},{"@type":"BreadcrumbList","@id":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-phosphate-lr-colorimetric\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Startseite","item":"https:\/\/rls-wacon.de\/"},{"@type":"ListItem","position":2,"name":"Shop","item":"https:\/\/rls-wacon.de\/shop\/"},{"@type":"ListItem","position":3,"name":"Caldur\u00ae Phosphate LR &#8211; Colorimetric"}]},{"@type":"WebSite","@id":"https:\/\/rls-wacon.de\/#website","url":"https:\/\/rls-wacon.de\/","name":"RLS Wacon analytics GmbH","description":"Experts for water monitoring","publisher":{"@id":"https:\/\/rls-wacon.de\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/rls-wacon.de\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/rls-wacon.de\/#organization","name":"RLS Wacon analytics GmbH","url":"https:\/\/rls-wacon.de\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/rls-wacon.de\/#\/schema\/logo\/image\/","url":"https:\/\/rls-wacon.de\/wp-content\/uploads\/2022\/10\/RLSWacon-analytics-Logo-BR-RZ-9_17-768x1591.png","contentUrl":"https:\/\/rls-wacon.de\/wp-content\/uploads\/2022\/10\/RLSWacon-analytics-Logo-BR-RZ-9_17-768x1591.png","width":768,"height":159,"caption":"RLS Wacon analytics GmbH"},"image":{"@id":"https:\/\/rls-wacon.de\/#\/schema\/logo\/image\/"}}]},"og_availability":"instock","product_availability":"instock","product_condition":"new"},"_links":{"self":[{"href":"https:\/\/rls-wacon.de\/en\/wp-json\/wp\/v2\/product\/32146","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rls-wacon.de\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/rls-wacon.de\/en\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":0,"href":"https:\/\/rls-wacon.de\/en\/wp-json\/wp\/v2\/product\/32146\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rls-wacon.de\/en\/wp-json\/wp\/v2\/media\/32150"}],"wp:attachment":[{"href":"https:\/\/rls-wacon.de\/en\/wp-json\/wp\/v2\/media?parent=32146"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/rls-wacon.de\/en\/wp-json\/wp\/v2\/product_brand?post=32146"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/rls-wacon.de\/en\/wp-json\/wp\/v2\/product_cat?post=32146"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/rls-wacon.de\/en\/wp-json\/wp\/v2\/product_tag?post=32146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}