... ,K organic matter, salinity and PH in the soil, fertilizer and plants, The machine can store ... and print data, has complete chemicals which are for free at the first time. Characteristic:Can quickly test N,P,K ... record and save the time of tested sampleCan store about 1000 groups datum (time, place, fertilizer ... 18V, 5W (With tester) Function:Test N,P,K, PH, organic matter, soil PH, soil salinity, ...