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Your test kit contains professional-grade water hardness test strips that provide laboratory-accurate results in just minutes. Simply dip the strip into a sample of your tap water, wait 60 seconds, and compare the color to the included chart. The strips measure calcium and magnesium levels (measured in ppm or grains per gallon) to determine if you have soft, moderately hard, hard, or very hard water. No complicated procedures or equipment needed - just accurate, instant results that our water treatment experts use to recommend the perfect softening solution for your Irish home.