{"product_id":"refractometer-hydrometer-calibration-standard","title":"Continuum Aquatics Refractometer \u0026 Hydrometer Calibration Standard","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003e· GUARANTEED ACCURATE SALINITY TESTING - Calibrates refractometers and hydrometers to ideal 35 ppt salinity and 1.026 specific gravity for marine tanks. · OPTIMIZED FOR MARINE AQUARIUMS - Ensures accurate salinity adjustments critical for coral health and saltwater fish comfort in reef aquariums. · DUAL-PURPOSE CALIBRATION SOLUTION - Works with both refractometers and swing-arm hydrometers—designed specifically for saltwater aquarium use. · LAB-GRADE QUALITY STANDARD FLUID - Made with precision-tested ingredients for consistent results—supports proper aquarium salinity and water chemistry. · AMERICAN-MADE EXCELLENCE - Continuum Aquatics is an industry-leading brand committed to providing innovative and scientifically backed aquatic care products. Made in the USA, we consistently deliver advanced, superior-quality solutions to elevate the vibrancy and health of your aquarium.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eDesigned for aquarium, reef, freshwater, or planted aquarium use depending on product line.\u003c\/li\u003e\n\u003cli\u003eManufacturer SKU: QRES250\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Continuum Aquatics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Aquarium Water Additives\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSKU:\u003c\/strong\u003e QRES250\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Continuum Aquatics","offers":[{"title":"Default Title","offer_id":51869864722753,"sku":"QRES250","price":18.83,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/8968\/2497\/files\/RefractometerandHydrometerCalibrationStandard250ml-01_10in.png?v=1782026908","url":"https:\/\/lawnandpets.com\/es\/products\/refractometer-hydrometer-calibration-standard","provider":"Lawn and Pets","version":"1.0","type":"link"}