Yes/No Hardness Tablets – AT004
Yes/No Hardness Tablets AT004 (250 per tub)
The tablets work with a traffic light, green means soft and red means hard, to find out how soft the water is the sample should be diluted until the water turns red or you reach the dilution level which confirms the water is as soft as required.
The provided 10ml vial can measure hardness down to 20ppm.
For water softeners we recommend testing down to 1ppm which can be done with a sample of 200ml of water, for eased you can use a measuring flask: