Water Quality Testing Kits
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Thomas Scientific Total Hardness Test Kit -- 1 drop 0 5 or 10 ppm as CaCO3 /
Total Hardness Test Kit -- 1 drop 0 5 or 10 ppm as CaCO3 /
1,959
Thomas Scientific Total Hardness Test Kit (Powder Indicator) -- 1 drop 2 or
Total Hardness Test Kit (Powder Indicator) -- 1 drop 2 or
1,960
1,961
Thomas Scientific Trace Hardness Test Kit -- 1 drop 0 5 ppm as CaCO3 / 25mL
Trace Hardness Test Kit -- 1 drop 0 5 ppm as CaCO3 / 25mL
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