Hanna Checker Marine Calcium Reagent 25 Tests HI758-26

Hanna HI758-26 is the 25-test reagent set for the HI758 Marine Calcium Checker. It supports the meter's calcium colorimetric method and is intended to replenish the consumables used with an existing instrument.

Water purity is especially important in this test. The HI758 procedure uses dilution water that must be free of calcium; residual calcium from tap water or inadequately purified water can push a result upward. Use the water quality specified by Hanna and keep the cuvettes free from contamination.

Follow the complete HI758 sequence for the liquid and packet reagents rather than treating them as interchangeable additions. Check lot and expiry details when opening a refill, and retain the correct measuring accessories for the method.