... description:Soil Nutrient Analyzer can quickly test the N,P,K organic matter, salinity and PH ... at the first time. Characteristic:Can quickly test N,P,K organic matter, salinity, and PH ... fertilizer), datum can be checked at any time.Can print testing data, sample No, testing item, sample content, ... ,50HzDirect current: 18V, 5W (With tester) Function:Test N,P,K, PH, organic matter, soil PH, soil salinity ...