Potassium Humate is a dark black humate derived from leonardite with high content of humic acid. When applied to soils it helps break compacted soils allowing for improved water penetration.For sandy soils, our humic acid adds essential organic material necessary for water retention and enhancing the sandy soil's ability to retain and not leach out vital plant nutrients. Appearance: powder/flake/granule Humic acid: 40%/50%/60%/65%/70% K2O: 5-12% Water Solubility: 60%/85%/90%/98% Moisture: 15% Packaging: 25kg/kraft paper bag or customized