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Hanna optional Checker HC Calibration Sets provide a simple solution to validating your Checker HC. Each high quality set of standards is manufactured in our state-of-the-art facility and comes supplied with a Certificate of Analysis.
Alkalinity DKH HI-772, Alkalinity HI-755, Calcium HI-758, Copper HR HI-702, Nitrate HR HI-782, PH Marine HI-780, Phosphate LR HI-713, Phosphate ULR HI-774, Phosphorus HI-736