Test Strip Test Form Strip Overall Length 5 in Test Type Test Strips Testing Parameter One Total Alkalinity Total Hardness Nitrate Nitrite pH Overall Width 1/4 in Parameter Measurements Included 0 to 10 ppm Nitrite 0 to 180 ppm Total Hardness 0 to 200 ppm Nitrate 0 to 240 ppm Total Alkalinity 6 to 9 pH Number of Tests 25 pH Resolution 0.5 pH Test Detects For Alkalinity Nitrate Nitrite pH Total Hardness Includes Color Chart Label