Product Description Soil Analyzer Optizen 1412SA High Precision and tidy designed Soil Analyzer Good soil is one of the most essential to make good cultivating. Before cultivating, check your soil and environment with our Optizen 1412SA. More than basic elements in your soil. OM(organic matter), P, K, Ca, Mg, Si(Silicic acid), NO3, CEC(Consumer Electronics Control)...