... 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 ... N, P, K, humic acid , organic matter, salinity, and PH in the soil, fertilizerand plant2.With ... indicators:1) Range: 1~14 Error: ±0.13. Salinity measurement technology indicators:1) Range: 0.01%~1.00 ...