{"product_id":"multi-reference-100-ml-fm-mref-20","title":"Multi Reference 100 ml","description":"\u003cp\u003eFauna Marin Multi Reference is a saltwater calibration standard for verifying reef test kit accuracy, letting hobbyists check home tests — including Trident — against certified lab values.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReference values: Calcium 422 mg\/L, Magnesium 1315 mg\/L, Potassium 409 mg\/L, Salinity 35 ppt (53.0 mS @ 25°C), Alkalinity 6.6 dKH (2.35 meq\/L), Strontium 8 mg\/L, Nitrate 10 mg\/L, Phosphate 0.2 mg\/L\u003c\/li\u003e\n\u003cli\u003eBased on a true saltwater matrix, not a synthetic solution\u003c\/li\u003e\n\u003cli\u003eQuality-tested via Fauna Marin's own ICP-AES lab equipment, with every batch verified at their Seawater Research Laboratory\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eHobby test kits drift as reagents age or technique varies, and a single odd reading can send you chasing a dosing problem that doesn't exist — testing this known-value reference solution against your kit reveals whether the kit itself is off, so you can apply a correction factor instead of second-guessing your tank.\u003c\/p\u003e\u003cp\u003eCompatible with: hobby-grade colorimetric\/titration test kits and ICP-style meters (e.g. Neptune Trident); also usable for refractometer calibration.\u003c\/p\u003e\u003cp\u003eNote: reference values may vary slightly by production batch — check the bottle label for your lot's exact figures.\u003c\/p\u003e","brand":"Fauna Marin","offers":[{"title":"Default Title","offer_id":46000590225452,"sku":"FM-MREF-20","price":17.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0584\/4382\/5196\/files\/fauna_marin_multi_reference_100ml.png?v=1787190181","url":"https:\/\/www.marineconceptsupply.com\/products\/multi-reference-100-ml-fm-mref-20","provider":"Marine Concept Supply","version":"1.0","type":"link"}