ZD-1804 Digital Soil Available N-P-K Nutrient Tester
Range: 0 - 1999 mg/Kg (mg/l).
Resolution: 1 mg/Kg (mg/l).
Accuracy: ±2% F.S.
Operating Temperature: 5 - 45°C (41 - 1113°F) / ATC.
Calibration: One-point ( the factory is calibrated and the user does not need to recalibrate ).
Display: LCD with illumination.
Power supply: DC 9V Battery (rechargeable ) .
Size: Ø50.5 X 140 mm(probe section).
Features: Automatic switch-off function: after about 5 minutes without pushing buttons, the meter will be switched off automatically . Used: It USES customized special metal materials as sensors to realize rapid determination of soil available N、P、K nutrients.