Many of us drink bottled water because we question the safety of our well water or don't like the taste. Consider only 15% of the U.S. population gets their tap water from well and the EPA does not monitor your well water. Home water quality testing helps you identify quickly that your well water is safe to drink. Safe Well Check? Kit makes testing accurate, affordable, and easy. Included Tests: Total Hardness: 0, 50, 80, 120, 250, 425, 1000 ppm (mg/L) Total Alkalinity: 0, 40, 80, 120, 180, 240, 500 ppm (mg/L) pH: 5.5, 6.5, 7.0, 7.5, 8.0, 8.5, 9.5 pH Iron (Fe+2): 0.0, 0.05, 0.1, 0.3, 1.0 ppm (mg/L) Nitrate (as N): 0, 2.0, 10, 20, 50 ppm (mg/L) Nitrite (as N): 0.2, 1.0, 1.5, 3.0 ppm (mg/L) Specifications: Part Number: 487941 Each Kit Contains 2 Tests