... description:Soil Nutrient Analyzer can quickly test the N,P,K organic matter, salinity and PH in the soil, fertilizer ... performance: qualified(Attention: above technical parameters all exceed national standards)2. PH technical parameters:Testing range: 1-14Error: ±0.13. ... 50HzDirect current: 18V, 5W (With tester) Function:Test N,P,K, PH, organic matter, soil PH, soil salinity, with storage and ...