Humic Acid Powder HUMIC ACID%≥ 55 ORGANIC MATTER%≥ 75 MOISTURE %≤ 35.0 SIZE: 2-5MM OR POWDER PRESSURE STANDING(N) 4-6 Technical Specification HUMIC ACID%≥ 70 ORGANIC MATTER%≥ 90 MOISTURE %≤ 15.0 PH VALUE 4.0-6.0 SIZE: 2-5MM(≥90%PASS) OR POWDER(0.5MMSIEVE≤5.0%) PRESSURE STANDING(N) 4-6