... analyzer Test N, P, K,humic acid,organic matter,salinity,PH in the soil, fertilizer Soil Nutrient detectorTest N, P, K,humic acid ... ,organic matter,salinity,PH in the soil, fertilizer,G.W ... : 18V, 5W (With tester) Function:Test N,P,K, PH, organic matter, soil PH, soil salinity, with storage and printing function ...