Chemicals set for digital extension set ion measurement

Chemicals set for the activation and calibration of the Cobra SMARTsense ion sensors of the Digital extension set ion measurement (N03, NH4, Cl, Ca, K) with the item number 12629-88.   The set consists of: Sodium nitrate Ammonium sulphate Ammonium chloride Sodium chloride Potassium chloride Sodium nitrate Calcium chloride Magnesium acetate Distilled water