1.Test N,P,K in fertilizer and organic matter in soil, in the plants. 2.Test PH and salinity in soil 3.with printer Introduction ... nutrient tester can quickly test the N, P, K, humic acid , organic matter,salinity, and PH in the soil, fertilizer and plants ... by computer.1.Quickly test the N, P, K, humic acid , organic matter, salinity, and PH in the soil, fertilizerand plant2.With ...