Calcium Carbonate Standard, 200ppm CaCo3 (1mL=0.2mg), 500 mL

Calcium Carbonate Standard 200 ppm by Exaxol, catalog number C1015-500, is an aqueous calcium standard at 200 ppm (1 mL = 0.2 mg CaCO₃), used to prepare calibration and check standards. Available in 500 mL from MBP, a registered vendor to many research institutes across the USA.