{"product_id":"fritz-35ppt-refractometer-calibration-fluid","title":"Fritz 35ppt Refractometer Calibration Fluid","description":"\u003cp data-path-to-node=\"1\"\u003e\u003cb data-path-to-node=\"1\" data-index-in-node=\"0\"\u003eFritz 35ppt Refractometer Calibration Fluid\u003c\/b\u003e is a precision laboratory-standardized solution designed to accurately calibrate optical refractometers, hydrometers, and digital salinity meters for marine aquariums. Unlike pure RO\/DI water, which only calibrates at zero, this fluid provides a true 35ppt (1.0264 S.G. at 25°C \/ 53 mS\/cm) benchmark that aligns directly with natural seawater parameter targets, eliminating measurement drift and offset errors. Using pre-measured, ready-to-use calibration fluid ensures your testing equipment delivers trustworthy salinity readings, protecting sensitive reef livestock and delicate stony corals from accidental osmoregulatory stress.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003e \u003c\/p\u003e","brand":"Williamstown Aquarium","offers":[{"title":"Default Title","offer_id":56582830293297,"sku":null,"price":14.95,"currency_code":"AUD","in_stock":false}],"url":"https:\/\/www.williamstownaquarium.com.au\/products\/fritz-35ppt-refractometer-calibration-fluid","provider":"Williamstown Aquarium","version":"1.0","type":"link"}