{"product_id":"hanna-salinity-35-ppt-calibration-sachet","title":"Hanna Salinity 35ppt Calibration Sachet","description":"\u003cstyle\u003e\n  .aq-pd { font-family: Georgia, 'Times New Roman', serif; color:#1a1a1a; line-height:1.6; }\n  .aq-pd h2 { font-size:1.25em; font-weight:700; margin:1.4em 0 .5em; border-left:4px solid #006064; padding-left:10px; line-height:1.2; }\n  .aq-pd p { margin:0 0 1em; }\n  .aq-pd a { color:#00838F; }\n  .aq-callout { background:#E0F7FA; border-left:4px solid #006064; padding:12px 16px; margin:0 0 16px; font-size:.97em; }\n  .aq-features { display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:12px; margin:0 0 8px; }\n  .aq-feature { background:#F0FBFC; border:1px solid #B2EBF2; border-radius:8px; padding:12px 14px; }\n  .aq-feature strong { display:block; margin-bottom:4px; color:#004D40; }\n  .aq-specs-table { width:100%; border-collapse:collapse; margin:.4em 0 1em; font-size:.95em; }\n  .aq-specs-table th, .aq-specs-table td { border:1px solid #B2EBF2; padding:8px 10px; text-align:left; }\n  .aq-specs-table th { background:#E0F7FA; width:38%; }\n\u003c\/style\u003e\n\u003cdiv class=\"aq-pd\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHanna Salinity 35 ppt Calibration Sachet\u003c\/strong\u003e is a single-use packet of certified calibration standard for saltwater testers. At 35.00 ppt, it matches the salinity of natural seawater, so you can calibrate your Hanna salinity tester quickly and know your readings are accurate. A correctly calibrated meter is the foundation of a stable reef or marine tank. Browse our full range of \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003ewater testing\u003c\/a\u003e and all our \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003esaltwater supplies\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"aq-callout\"\u003e\n\u003cstrong\u003eAccurate salinity starts with calibration.\u003c\/strong\u003e A pre-measured 35.00 ppt seawater standard in a sealed single-use sachet, so every calibration is fresh and reliable.\u003c\/div\u003e\n\u003ch2\u003eWhy use a calibration sachet\u003c\/h2\u003e\n\u003cdiv class=\"aq-features\"\u003e\n\u003cdiv class=\"aq-feature\"\u003e\n\u003cstrong\u003eCertified 35.00 ppt\u003c\/strong\u003eMatches natural seawater salinity for a true reference point.\u003c\/div\u003e\n\u003cdiv class=\"aq-feature\"\u003e\n\u003cstrong\u003eSingle-use freshness\u003c\/strong\u003eEach sealed sachet is uncontaminated, unlike an opened bottle that can drift over time.\u003c\/div\u003e\n\u003cdiv class=\"aq-feature\"\u003e\n\u003cstrong\u003eFast and simple\u003c\/strong\u003eTear, pour, and calibrate in seconds, no mixing or measuring.\u003c\/div\u003e\n\u003cdiv class=\"aq-feature\"\u003e\n\u003cstrong\u003eReliable readings\u003c\/strong\u003eRegular calibration keeps your salinity tester accurate for dosing and water changes.\u003c\/div\u003e\n\u003cdiv class=\"aq-feature\"\u003e\n\u003cstrong\u003eReef and marine ready\u003c\/strong\u003eIdeal for anyone keeping a saltwater or reef aquarium.\u003c\/div\u003e\n\u003cdiv class=\"aq-feature\"\u003e\n\u003cstrong\u003eTravel friendly\u003c\/strong\u003eCompact sachets are easy to keep on hand for calibration anywhere.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch2\u003eHow to Use\u003c\/h2\u003e\n\u003cp\u003eTear open the sachet and pour the standard into a clean cup or directly over the sensor as your meter instructs. Follow your Hanna tester's calibration prompts, then rinse the probe with clean water before measuring your aquarium. Calibrate regularly, and any time readings look off, for the most accurate results. Discard the sachet after a single use.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable class=\"aq-specs-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eHanna Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eSalinity calibration standard\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003ctd\u003e35.00 ppt (natural seawater salinity)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003ctd\u003eSingle-use sachet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003ctd\u003eCalibrating Hanna salinity testers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater type\u003c\/th\u003e\n\u003ctd\u003eSaltwater and reef aquariums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eRecommended Pairings\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShop all \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/water-testing\"\u003ewater testing kits and meters\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eBrowse everything for your \u003ca href=\"https:\/\/squeakysaquatics.com\/collections\/salt-water\"\u003esaltwater and reef tank\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does 35 ppt mean?\u003c\/strong\u003e\u003cbr\u003eParts per thousand (ppt) measures salinity. 35.00 ppt is the average salinity of natural seawater, which is the target for most marine and reef aquariums.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy not just use a bottle of solution?\u003c\/strong\u003e\u003cbr\u003eOnce a bottle is opened, the standard can evaporate or absorb contaminants and slowly drift. A single-use sachet is sealed and fresh every time, so your calibration is dependable.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should I calibrate?\u003c\/strong\u003e\u003cbr\u003eCalibrate regularly per your meter's guidance, and any time the readings seem inconsistent. Frequent calibration keeps your salinity numbers trustworthy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich meters does it work with?\u003c\/strong\u003e\u003cbr\u003eIt is designed to calibrate Hanna salinity testers. Always follow your specific meter's calibration instructions.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Hanna","offers":[{"title":"Default Title","offer_id":48798189912283,"sku":"HI70024","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0767\/5209\/3403\/files\/212119-hannainstruments-35ppt-salinitysolution-testing-fr.webp?v=1779373765","url":"https:\/\/squeakysaquatics.com\/products\/hanna-salinity-35-ppt-calibration-sachet","provider":"Squeaky's Aquatics","version":"1.0","type":"link"}