{"product_id":"haviland-durachlor-56-granular-pool-chlorine-granules-4-lb","title":"Haviland DuraChlor 56 Granular Pool Chlorine Granules 4 lb","description":"\u003cp\u003eThe \u003cstrong\u003eHaviland DuraChlor 56 Granular Stabilized Chlorine Granules (4 lb)\u003c\/strong\u003e provide potent, fast-dissolving pool sanitation with 56% available chlorine. Formulated for daily maintenance in all pool types including vinyl-lined pools, these near-neutral pH granules are completely soluble, making them an ideal choice for routine chlorination and algae control in both residential and commercial pools.\u003c\/p\u003e\n\u003ch2\u003e🚩 PRO TIP\u003c\/h2\u003e\n\u003cp\u003eBroadcast granules directly over the pool surface with the pump running. Apply 2.5 oz per 10,000 gallons daily to maintain 1–3 ppm free chlorine. Adjust pH to 7.2–7.6 and total alkalinity to 125–175 ppm before dosing. \u003cstrong\u003eNever pre-mix with other chemicals.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003ePRODUCT FEATURES\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e✅ 56% available chlorine — potent, reliable pool sanitation\u003c\/li\u003e\n\u003cli\u003e✅ Fast-dissolving formula — completely soluble, no residue\u003c\/li\u003e\n\u003cli\u003e✅ Near-neutral pH — gentle on pool surfaces and equipment\u003c\/li\u003e\n\u003cli\u003e✅ Stabilized with cyanuric acid — UV-protected for outdoor pools\u003c\/li\u003e\n\u003cli\u003e✅ Strong algae killer — effective against bacteria and algae\u003c\/li\u003e\n\u003cli\u003e✅ Safe for all pool surfaces including vinyl-lined pools\u003c\/li\u003e\n\u003cli\u003e✅ Manufactured by Haviland Consumer Products — trusted pool chemistry since 1946\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTECHNICAL SPECIFICATIONS\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Haviland \/ DuraChlor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number (SKU):\u003c\/strong\u003e C002280-CS77C1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct No.:\u003c\/strong\u003e HAV2280CS77C1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 025551584137\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet Weight:\u003c\/strong\u003e 4 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e 4 lb pail\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActive Ingredient:\u003c\/strong\u003e Sodium dichloro-s-triazinetrione, dihydrate — 99%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Chlorine:\u003c\/strong\u003e 56%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOther Ingredients:\u003c\/strong\u003e 1%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStabilized:\u003c\/strong\u003e Yes (cyanuric acid)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEPA Reg. No.:\u003c\/strong\u003e 57787-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Swimming pools — broadcast directly over pool surface\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDosage:\u003c\/strong\u003e 2.5 oz per 10,000 gallons daily to maintain 1–3 ppm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget pH:\u003c\/strong\u003e 7.2–7.6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Total Alkalinity:\u003c\/strong\u003e 80–120 ppm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWHY SHOP WITH AL'S COOL POOL STORE?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Fast, reliable shipping on every order\u003c\/li\u003e\n\u003cli\u003e✅ Genuine OEM and top-brand parts only\u003c\/li\u003e\n\u003cli\u003e✅ Knowledgeable pool \u0026amp; spa experts ready to help\u003c\/li\u003e\n\u003cli\u003e✅ Hassle-free returns and satisfaction guarantee\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Haviland","offers":[{"title":"Default Title","offer_id":44213749809287,"sku":"C002280-CS77C1","price":36.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0634\/1217\/4983\/files\/haviland-durachlor-56-granular-pool-chlorine-granules-4-lb_sanitizer_pool_chemicals_Haviland_granular_DuraChlor_dichlor_chlorine_fast-dissolving_vinyl_liner_safe_daily_maintenance_pH_neutral_C002280-CS77C1.png?v=1773749651","url":"https:\/\/alscoolpoolstore.com\/products\/haviland-durachlor-56-granular-pool-chlorine-granules-4-lb","provider":"Al's Cool Pool Store","version":"1.0","type":"link"}