This product is 1% HA aqueous solution with HA dissolving in injection grade water Characteristics White or ... , very hygroscopic grain or powder, without odor, turn to clear solution when dissolved in water; insoluble in ethanol, and aether. Examination ... counts<10CFU/mlMold&Yeast<10CFU/mlStaphylococcus aureusnegativePseudomonas aeruginosanegative hyaluronic acid (solution)