Hanna HI772 Alkalinity Checker Guide

Step-by-step guide to accurately test alkalinity (dKH) in your reef aquarium using the Hanna HI772 Marine Alkalinity Checker.

beginner2-3 minutesHanna Instruments

Step 1 of 8

Flat-lay of Hanna HI772 Checker, cuvettes, syringe, and reagent bottle on a dark surface

Before You Begin

Gather your Hanna HI772 Checker, cuvettes, syringe with plastic tip, and HI772-26 reagent bottle. Make sure you have a clean, lint-free cloth and access to RO/DI water for rinsing cuvettes.

TipPerform this test at room temperature for best accuracy
TipCheck that the battery indicator is not low (blinking battery icon)
TipHave a paper towel handy to dry the cuvette exterior before testing

CautionHI772-26 reagent is mildly acidic. Avoid contact with skin and eyes. Rinse immediately with water if contact occurs.