***Direct from the Manufacturer - USA*** WaterWorks Total Hardness test strips #480008 BOTTLE CONTAINS 50 TEST STRIPS FOR TESTING OF TOTAL HARDNESS. Tests for calcium & magnesium hardness from 0-1000 ppm. Solve the hardness problem before it becomes a problem with Total Hardness test strips from WaterWorks. If you’re looking for a short turnaround time for testing in residential, commercial, and industrial settings, then look no further. This product DOES NOT need the eXact iDip to read results.
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