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One Single Test Strip is contained to conduct ONE test of the hardness of your water ( in grains per gallon ).In stock The more you buy the lower the per item cost.
Single Test includes instructions, color matching chart, and is very simple to use.
Hardness between 0 - 1000 ppm ( up to 50 grains per gallon ),
To Test:
Dip into water sample for 3 seconds.
Remove, do not shake.
Wait 20 seconds and then match with closest color block.
Colors are stable for 1 minute.
Suggested Price:
1.99
Price: $0.99
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