... fertilizer and organic matter in soil, in the plants. 2.Test PH and salinity in soil 3.with printer Introduction:The soil nutrient tester ... can quickly test the N, P, K, humic acid , organic matter,salinity, and PH in the soil, fertilizer and ... , humic acid , organic matter, salinity, and PH in the soil, fertilizerand plant2.With the function of time display, can automatically ...