ECO-CHECK 5 IN 1 TEST STRIPS

Detects:
Nitrate (asNO3): 0, 20, 40, 80, 160, 200 ppm (mg/L)
Nitrite (as NO2): 0, 0.5, 1, 3, 5, 10, 20 ppm (mg/L)Total Hardness: 0, 25, 75, 150, 300, 1000 ppm (mg/L)Total Alkalinity: 0, 40, 80, 120, 180, 300, 720 ppm (mg/L)pH: 5.5, 6.5, 7.0, 7.5, 8.0, 8