I buy test strips off amazon. Dip them in the tank and match color and it's done. Im sure the actually kit is better but the strips are cheap, easy to use. and tell you what you need to know. Im not a chemical or softener guy but ive always been told and went by this for TOUCHLESS car washes:
Soft Water
0-3 grains - Cleans cars and uses the least amount of chemical
Moderately Hard Water
3-7 grains - Can still clean a car but will use more chemical
Hard Water
7-10 grains - May be able to clean a car with excessive chemical usage but also depends on soils. Probably need a softener.
Very Hard
10 grains and above. Absiouletly need a softener.
Maybe @buckeyehydro can chime in and he is definitely more knowledgeable.
Soft Water
0-3 grains - Cleans cars and uses the least amount of chemical
Moderately Hard Water
3-7 grains - Can still clean a car but will use more chemical
Hard Water
7-10 grains - May be able to clean a car with excessive chemical usage but also depends on soils. Probably need a softener.
Very Hard
10 grains and above. Absiouletly need a softener.
Maybe @buckeyehydro can chime in and he is definitely more knowledgeable.
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