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- Trust the original Hach test kit!
- Simple drop-count titration measures hardness as CaCO3 (1 gpg = 17.1 mg/L)
About water hardness: 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. | Method / Chemistry | Range | Smallest Increment | Approx. Number of Tests | Case Style | | Drop count titration/EDTA-bulk powder | 1-30 gpg | 1 gpg | 100 | 2.75x2.75x5 inches |
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 Parameter/Range/Reagent Information
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Related Product Information: |
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Bottle, Sampling, Low Density, Polyethylene, 500 mL, 12/pk
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Hardness Standard Solution as CaCO3 20 gpg (340 mg/L) 500 mL
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Hardness (Total) Test Kit, Model 5-EP MG-L, Drop Count Titration, 20-400 mg/L, 100 tests
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Total Hardness Test Strips, 0-425 mg/L, 50 tests
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Hardness and Iron Test Kit, Model HA-95A, Color Cube
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5 in 1 Water Quality Test Strips, 50 tests
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