Method oCPC Need based, single step reconstitution No interference from Mg and Fe Autozyme Calcium is single reagent system for determination of calcium based on colorimetric method using oCresolphthalein Complexone Autozyme Calcium is linear up to 15 mg% Autozyme Calcium is a High Stability Reagent Autozyme Calcium has one step reconstitution. It involves mixing CPC and Diluent reagent Calcium can be determined in 5 minutes Autozyme Calcium has minimum reagent waste since working solution can be prepared according to the need Interference of Mg and Fe is negligible. Lipemic samples do not require any specific treatment