Total Hardness Yes/No Tablets – AT004

£28.60 exc. VAT

Feedwater recommend testing a boiler down to 5ppm of hardness and a water softener down to 1ppm of hardness.

Download the pdf instructions here


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:

Conical Measuring Flask (Plastic)

Total Hardness Test Kit


Boiler Servicing options and contracts available

Take advantage of Feedwater’ boiler servicing options and contracts when you buy our chemical products.

Additional information

Weight 0.1 kg

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