{"id":31898,"date":"2026-03-12T11:30:20","date_gmt":"2026-03-12T10:30:20","guid":{"rendered":"https:\/\/rls-wacon.de\/produkt\/caldur-chlorine-free-photometric\/"},"modified":"2026-03-12T11:30:20","modified_gmt":"2026-03-12T10:30:20","slug":"caldur-chlorine-free-photometric","status":"publish","type":"product","link":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-chlorine-free-photometric\/","title":{"rendered":"Caldur\u00ae Chlorine (free) &#8211; Photometric"},"content":{"rendered":"<h2>CALDUR\u00ae Chlorine (free) test kit &#8211; Photometric<\/h2>\n<h3>What is free chlorine measured for?<\/h3>\n<p>Free chlorine is the most commonly used disinfectant in the world for treating drinking water and swimming pool water. It reliably kills bacteria, viruses and other pathogens, thus ensuring hygienically safe water. In chlorination, free chlorine is the active, disinfecting form that is responsible for effective water disinfection.  <\/p>\n<p><strong>Free chlorine<\/strong> in drinking water should be between 0.1 and 0.3 mg\/l to ensure a sufficient disinfection effect. Higher concentrations are recommended in swimming pools, depending on use. Regular monitoring of the free chlorine content is essential for ensuring water quality and protecting health.  <\/p>\n<p><strong>Limit values according to the Drinking Water Ordinance:<\/strong><br \/>\n&#8211; Free chlorine: max. 0.3 mg\/l Cl\u2082 <\/p>\n<p>Regular measurement of free chlorine is essential for effective disinfection. The CALDUR\u00ae Chlorine (free) Test Set &#8211; Photometric enables the precise determination of free chlorine with the WINLAB Data Line photometer for maximum measurement accuracy. <\/p>\n<h3>How does the test set work?<\/h3>\n<p>The CALDUR\u00ae Chlorine (free) test set is based on the proven DPD method (N,N-diethyl-p-phenylenediamine). DPD reacts specifically with free chlorine to form a pink-violet dye, the intensity of which is proportional to the chlorine concentration. <\/p>\n<p><strong>Measurement of free chlorine:<\/strong> After adding the reagents, a pink coloration corresponding to the free chlorine content develops immediately. The evaluation is carried out photometrically with the WINLAB Data Line photometer for objective and reproducible measurement results. <\/p>\n<p>The DPD method is internationally recognized and complies with the DIN EN ISO 7393-2 standards and WHO recommendations. The photometric evaluation allows you to achieve maximum precision and documentable measurement results &#8211; ideal for professional applications in the laboratory and in industry. <\/p>\n<h3>Advantages of the CALDUR\u00ae test set<\/h3>\n<ul class=\"feature-list\">\n<li>Quick analysis in just 1 minute\n<p style=\"text-indent: 30px; font-style: italic;\">Immediate results for free chlorine &#8211; ideal for daily routine checks<\/p>\n<\/li>\n<li>Photometric measurement for maximum precision\n<p style=\"text-indent: 30px; font-style: italic;\">Objective and reproducible measurement results with the WINLAB Data Line Photometer<\/p>\n<\/li>\n<li>Low measuring range 0.05 &#8211; 1.0 mg\/l Cl\u2082\n<p style=\"text-indent: 30px; font-style: italic;\">Perfect for drinking water monitoring and monitoring limit values<\/p>\n<\/li>\n<li>150 provisions per set &#8211; economical in continuous use\n<p style=\"text-indent: 30px; font-style: italic;\">Cost-efficient for daily checks in waterworks, swimming pools and industry<\/p>\n<\/li>\n<li>DPD method according to international standards\n<p style=\"text-indent: 30px; font-style: italic;\">Standard-compliant according to DIN EN ISO 7393-2 &#8211; globally recognized reference method<\/p>\n<\/li>\n<li>Compact packaging in a plastic bag\n<p style=\"text-indent: 30px; font-style: italic;\">Space-saving and ideal for use with existing equipment<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>CALDUR\u00ae Chlorine (free) test kit &#8211; Photometric What is free chlorine measured for? Free chlorine is the most commonly used disinfectant in the world for treating drinking water and swimming pool water. It reliably kills bacteria, viruses and other pathogens, thus ensuring hygienically safe water. In chlorination, free chlorine is the active, disinfecting form that [&hellip;]<\/p>\n","protected":false},"featured_media":31900,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[772,639,633],"product_tag":[],"class_list":{"0":"post-31898","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-chlorine","7":"product_cat-photometric-method","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 Chlorine (free) test kit - Photometric for water<\/title>\n<meta name=\"description\" content=\"Measure free chlorine precisely with the CALDUR\u00ae Chlorine (free) test set and the WINLAB Data Line photometer. 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