These 3.8L PYREX® desiccators are designed for general analytical work. The sturdy knob makes the cover easy to handle. For replacement covers, see Item # D1150-3. For lower part only, see Item No. D1150-4. WARNING: Do not heat or subject to pressure. Not for vacuum applications. 200mm I.D. Recommended Plate Diameter: 190mm. Sold individually. Corning #: 3080-200. Capitol #: D1140-2.