Test Strip Test Form Strip Overall Length 5 in Test Type Test Strips Testing Parameter One Free Chlorine Nitrate Nitrite pH Total Chlorine Total Hardness Overall Width 1/4 in Parameter Measurements Included 0 to 10 ppm Free Chlorine 0 to 10 ppm Nitrite 0 to 10 ppm Total Chlorine 0 to 400 ppm Total Hardness 0 to 50 ppm Nitrate 4 to 10 pH Number of Tests 25 pH Resolution 1.0 pH Test Detects For Free Chlorine Hardness Nitrate Nitrite pH Total Chlorine