Main Features: Isotropic, with no front or back side, capable of absolute retention of solid particles larger than the rated pore size. Thermal Stability: Exhibits excellent thermal stability after 30 minutes of autoclaving at 120°C. Chemical Stability: Can filter various pharmaceutical solutions with pH 2–11, as well as instrument oil, 5% acetic acid, 6N sulfuric acid, 6N potassium hydroxide, anhydrous ethanol, glycerol, methanol, n-propanol, isopropanol, trioctyl trimellitate, polyethylene glycol, various alcoholic beverages, soft drinks, vinegar, etc. However, it cannot filter glacial acetic acid, 6N nitric acid, 6N potassium hydroxide, acetone, or dichloromethane.