1. Property This product appears as black or brown powder, it' s easily dissolved in water, it react acid. It contains the active group such as hydrocarbyl, carboxyl and so on. 2. Quality indexes Item Indexes Humic acid( dry basis) , % e50 Moisture, % d15 PH 8-10 Fineness, % d5 3. Use Its used chiefly as the heat-resistant fluid loss agent for fresh drilling fluid, combining the function of visbreaking. Recommended quanlity to be added is 3% -5% . 4. Storage and Package 25Kg net sealed in 4-in-1 compound paper bag with plastic lining. During storage and transport see that the bag is intact. But its property is not affected even if it becomes damp.