The HI-735-25 are high-quality reagents that are pre-measured, allowing for users to achieve fast and accurate measurements with their Total Hardness LR Checker® HC.
Four steps. One click. Instant Readout
1. ‘Zero’ the Checker®HC with your vial inside
2. Place a 10ml water sample into the vial and add your reagent
3. Place your vial into your Checker®HC
4. Press the button and read the results