Range : 0.00 to 3.00 mg/L (ppm) (as ammonia-nitrogen)
Resolution : 0.01 mg/L
Accuracy @ 25°C (77°F) : ±0.04 mg/L ±4% of reading
Method : adaptation of the ASTM Manual of Water and Environmental Technology, D1426-93, Nessler method
Auto-off : after ten minutes of non-use in measurement mode; after one hour of non-use in calibration mode; with last reading reminder
Environment : 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery type : 9V battery
Dimensions : 193 x 104 x 69 mm (7.6 x 4.1 x 2.7”)
Weight : 360g (12.7oz.)