{"product_id":"salifert-kh-test-kit-50-tests","title":"Salifert KH Test Kit - 100 tests","description":"\u003cp\u003e\u003cimg\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" align=\"center\"\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003eCalcium alone cannot form the skeletal material of corals and allow calcareous algae to grow. Some other substances are needed as well. A few other constituents are carbonate and bicarbonate. These two substances also have a major impact on the stabilization of the \u003cspan\u003e\u003cimg border=\"0\" src=\"https:\/\/salifert.com\/pt\/khpt.jpg\" width=\"170\" height=\"198\"\u003e\u003c\/span\u003epH in the proper range of 8.1 – 8.4. Such stabilization is also called buffering.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003eThe total carbonate and bicarbonate concentration is also called carbonate alkalinity or carbonate hardness. The only difference between alkalinity and carbonate hardness is a conversion factor.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003eNSW has an alkalinity of approx. 2.7 meq\/L or approx. 7.5 dKH when expressed as carbonate hardness.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003eFor a stable system the alkalinity or carbonate hardness should have a value similar to NSW or slightly higher and should preferably not fluctuate by more than 5%. This means a maximum fluctuation of 0.14 meq\/L or 0.4 dKH.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003eTherefore an alkalinity test kit should be capable in measuring in steps smaller than 0.14 meq\/L.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003eConclusion: \u003c\/span\u003e\u003c\/span\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003eSince the major buffer components used for coral and calcareous algae growth are bicarbonate and carbonate, they should be added to correct any decrease in alkalinity or carbonate hardness.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003eA proper formulated buffer should function in such a way that the corrective measures results in a long lasting effect and should not upset the pH of the system. The alkalinity or carbonate hardness should be kept as stable as possible requiring highly sensitive and accurate means for testing.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003eThe \u003cb\u003eSalifert KH\/Alk test\u003c\/b\u003e is very straightforward. It \u003c\/span\u003e\u003c\/span\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003emeasures in sufficient small steps of 0.1 meq\/L or 0.3 dKH \u003c\/span\u003e\u003c\/span\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003e with a sharp color change. \u003c\/span\u003e\u003c\/span\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"font-size: medium;\"\u003eThis makes detection of important yet small change possible.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan lang=\"EN-US\"\u003e\u003cspan style=\"color: #ff0000; font-size: medium;\"\u003eThe kit can perform approx. 100 - 200 measurements.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg\u003e\u003c\/p\u003e","brand":"Salifert","offers":[{"title":"Default Title","offer_id":55775838732617,"sku":null,"price":8.5,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0778\/5827\/5657\/files\/Screenshot2026-10-28182834.png?v=1793204933","url":"https:\/\/aquariumprime.com\/products\/salifert-kh-test-kit-50-tests","provider":"Aquariumprime Ltd.","version":"1.0","type":"link"}