Detects: Nitrate (as NO3): 0, 20, 40, 80, 160, 200 ppm (mg/L)
Total Hardness: 0, 25, 75 , 150, 300, 1000 ppm (mg/L)
pH: 5.5, 6.5, 7.0, 7.5, 8.0, 8.5, 9.5 pH
Nitrite (as NO2): 0, 0.5, 1, 3, 5, 10, 20 ppm (mg/L)
Total Alkalinity: 0. 40, 80, 120, 180, 300, 720 ppm (mg/L)


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