Soil nutrient meter

Key Attributes.

Specification: 1. Nutrient measurement technology indicators: 1) Stability: A(absorbency of illumimation) drift less than 0.003 in three minutes. 2) Repetitiveness: A(absorbency of illumimation) less than 0.005 3) Linearity errors: less than 3.0 % 4) Sensitivity: red light =4.5 ×10-5;green light =3.17×10-3 5) Wavelength range: red light 620±4nm;blue light 440±4nm; green light 520±4nm 6) Shake resistance: qualified (Attention: above indicators all exceed national standards) 2. PH: measurement technology indicators: 1)Range: 1~14 2)Error: ±0.1 3. Salinity measurement technology indicators: 1) Range: 0.01%~1.00% 2) Error: ±5% 1)Alternating current (AC): 80V~240V¿50Hz; 2) Direct current: 18V¿5W (With tes