NT Labs Marine Lab Carbonate Hardness Test Kit 35 Tests

Easy to use, Fast & accurate results

Add 5 ml of water to be tested into the titration vessel provided. Draw up 1 ml of KH reagent so that the bottom of the plunger is at the 1.0 ml mark. It is normal for there to be an air bubble below the plunger and this does not need to be removed. Slowly dispense from the syringe into the titration vessel while swirling to ensure proper mixing. Keep dispensing from the syringe. Slow down when the colour of the solution changes from blue to green Stop dispensing from the syringe when the solution changes to yellow without a hint of blue/green. Read the syringe, noting the value indicated by the bottom of the plunger (not the level of the liquid). Look up this value on the chart to determine the KH in dKH. If the colour changes to yellow at a syringe reading greater than 0.4, the KH will be less than 6 and requires increg.