{"id":31649,"date":"2026-03-12T11:31:50","date_gmt":"2026-03-12T10:31:50","guid":{"rendered":"https:\/\/rls-wacon.de\/produkt\/caldur-iron-lr-colorimetric\/"},"modified":"2026-03-12T11:31:50","modified_gmt":"2026-03-12T10:31:50","slug":"caldur-iron-lr-colorimetric","status":"publish","type":"product","link":"https:\/\/rls-wacon.de\/en\/produkt\/caldur-iron-lr-colorimetric\/","title":{"rendered":"Caldur\u00ae Iron LR &#8211; Colorimetric"},"content":{"rendered":"<h2>CALDUR\u00ae Iron LR Test Set &#8211; Colorimetric<\/h2>\n<h3>What is iron measured for?<\/h3>\n<p>Iron is a naturally occurring element that can be found in almost all bodies of water and groundwater sources. Although iron is essential for the human body, too high a concentration in drinking water can lead to undesirable effects. Elevated iron levels cause a brownish discoloration of the water, a metallic taste and can lead to deposits in pipes and household appliances.  <\/p>\n<p><strong>The limit value for drinking water in Germany is 0.2 mg\/l<\/strong> (Drinking Water Ordinance). However, significantly higher values are measured in many wells and groundwater sources, which is why regular monitoring is essential. Monitoring the iron content is particularly important in water treatment, swimming pools and industrial processes.  <\/p>\n<p>Iron can enter the water from various sources: natural leaching from iron-containing rock layers, corrosion of iron pipes, industrial discharges or through iron-containing additives in water treatment. The oxidation of dissolved iron(II) to iron(III) leads to the characteristic rusty brown coloration and turbidity of the water.<\/p>\n<h3>How does the test set work?<\/h3>\n<p>The CALDUR\u00ae Iron LR Test Set &#8211; Colorimetric works according to the proven ferrozine method. Ferrozine forms an intense violet color complex with iron(II) ions, the intensity of which is proportional to the iron concentration. By adding two reagents to the water sample, any iron(III) present is first reduced to iron(II) in order to determine the total iron concentration.<\/p>\n<p>After a reaction time of 4 minutes, the measured value is determined by direct color comparison with a supplied 6-stage color chart. This colorimetric method enables fast and reliable on-site determination without the need for expensive laboratory equipment. Optionally, the evaluation can also be carried out photometrically with the WINLAB Data Line photometer, which enables an even more precise measurement.  <\/p>\n<h3>Advantages of the CALDUR\u00ae test set<\/h3>\n<ul class=\"feature-list\">\n<li>Quick analysis in just 4 minutes\n<p style=\"text-indent: 30px; font-style: italic;\">Ideal for on-site use &#8211; saves time and enables immediate decisions<\/p>\n<\/li>\n<li>High precision in the low concentration range (from 0.05 mg\/l)\n<p style=\"text-indent: 30px; font-style: italic;\">Perfect for compliance with the Drinking Water Ordinance and for sensitive applications<\/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 regular checks in waterworks, industry and private wells<\/p>\n<\/li>\n<li>Can be used colorimetrically and optionally photometrically\n<p style=\"text-indent: 30px; font-style: italic;\">Flexible for simple on-site tests or precise laboratory analyses with photometer<\/p>\n<\/li>\n<li>Easy handling without special equipment\n<p style=\"text-indent: 30px; font-style: italic;\">No additional technology required &#8211; ideal for quick tests on the go<\/p>\n<\/li>\n<li>Robust, waterproof plastic housing with hinged lid\n<p style=\"text-indent: 30px; font-style: italic;\">Safe transportation and protection of reagents &#8211; durable and reliable<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>CALDUR\u00ae Iron LR Test Set &#8211; Colorimetric What is iron measured for? Iron is a naturally occurring element that can be found in almost all bodies of water and groundwater sources. Although iron is essential for the human body, too high a concentration in drinking water can lead to undesirable effects. Elevated iron levels cause [&hellip;]<\/p>\n","protected":false},"featured_media":31652,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[637,770,633],"product_tag":[],"class_list":{"0":"post-31649","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-colorimetric-method","7":"product_cat-iron","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 Iron LR Test Set - Colorimetric for water<\/title>\n<meta name=\"description\" content=\"Monitor the iron concentration in water with the CALDUR\u00ae Iron LR Test Set - Colorimetric. 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