{"product_id":"1-calcium-hardness-reagent-wl-4259-k-250ml","title":"LaMotte | WL-4259-K | #1 Calcium Hardness Reagent | 250 mL","description":"\u003cp data-start=\"104\" data-end=\"349\"\u003eThe LaMotte WL-4259-K #1 Calcium Hardness Reagent is a 250 mL replacement reagent designed for compatible LaMotte water testing procedures. This reagent is used as part of calcium hardness testing for pool, spa, and water treatment applications.\u003c\/p\u003e\n\u003cp data-start=\"351\" data-end=\"369\"\u003e━━━━━━━━━━━━━━━━━━\u003c\/p\u003e\n\u003cp data-start=\"371\" data-end=\"383\"\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"385\" data-end=\"456\"\u003e• Genuine LaMotte replacement reagent for compatible water testing kits\u003c\/p\u003e\n\u003cp data-start=\"458\" data-end=\"537\"\u003e• #1 calcium hardness reagent used in approved calcium hardness test procedures\u003c\/p\u003e\n\u003cp data-start=\"539\" data-end=\"596\"\u003e• 250 mL bottle size for routine testing and refill needs\u003c\/p\u003e\n\u003cp data-start=\"598\" data-end=\"678\"\u003e• Supports pool, spa, aquatic facility, and water treatment testing applications\u003c\/p\u003e\n\u003cp data-start=\"680\" data-end=\"756\"\u003e• Used to help measure calcium hardness as part of water balance maintenance\u003c\/p\u003e\n\u003cp data-start=\"758\" data-end=\"837\"\u003e• Suitable for service professionals, facility operators, and maintenance teams\u003c\/p\u003e\n\u003cp data-start=\"839\" data-end=\"901\"\u003e• Direct replacement reagent for LaMotte part number WL-4259-K\u003c\/p\u003e\n\u003cp data-start=\"903\" data-end=\"990\"\u003e• Verify test kit compatibility, procedure requirements, and expiration date before use\u003c\/p\u003e\n\u003cp data-start=\"992\" data-end=\"1010\"\u003e━━━━━━━━━━━━━━━━━━\u003c\/p\u003e\n\u003cp data-start=\"1012\" data-end=\"1028\"\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1030\" data-end=\"1358\"\u003eThe LaMotte WL-4259-K #1 Calcium Hardness Reagent is intended for compatible LaMotte water testing systems and procedures that require this specific calcium hardness reagent. Calcium hardness testing is an important part of pool, spa, and water treatment maintenance because it helps operators evaluate water balance conditions.\u003c\/p\u003e\n\u003cp data-start=\"1360\" data-end=\"1626\"\u003eThis reagent should be selected based on the exact test method, test kit model, and required reagent sequence. Proper storage, handling, and use according to LaMotte testing instructions are important for consistent results and dependable water chemistry management.\u003c\/p\u003e","brand":"LAMOTTE COMPANY","offers":[{"title":"Default Title","offer_id":52272343974200,"sku":"WL-4259-K","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/6319\/9544\/files\/Screenshot2026-05-07164802.png?v=1778256404","url":"https:\/\/appaetechpoolsupply.com\/products\/1-calcium-hardness-reagent-wl-4259-k-250ml","provider":"AppaeTech Pool Supply","version":"1.0","type":"link"}