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Water hardness is caused almost entirely by calcium and magnesium ions. Other di- and trivalent metals have a similar effect, but usually are not present in high enough concentration in potable waters to cause problems. Hardness increases soap consumption in laundries and causes scale in boilers. Contains 50 tests.

  • Easy to use, disposable, and inexpensive
  • A great way to obtain quick, quantitative answers in the field or in the lab



Footnote: *mg/L unless otherwise noted, ppb = ??g/L, ppm = mg/L.; gpg = grains per gallon; 1 gpg = 17.1 mg/L or 17.1 ppm. 1EPA-accepted for wastewater. Check with your regulatory agency.
Model: Test Strips
Number of tests: 50
Parameter: Hardness, Total - as CaCO3
Platform: Test Strip
Range: 0 to 425 ppm
Range 2: 0 to 25 gpg
Ship Wt. (lbs): 0.2
Smallest Increment Steps. Steps: 0, 25, 50, 120, 250, 425 ppm


SKU HAC2745250
Brand HACH
Shipping Weight 0.1000kg
Shipping Width 0.040m
Shipping Height 0.110m
Shipping Length 0.040m
Unit Of Measure 50pk

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