PYREX 31770-250ES Gas Washing Stopper with Extra Coarse Fritted Cylinder

The PYREX 31770-250ES Gas Washing Stopper with Extra Coarse Fritted Cylinder is a high-quality replacement laboratory glass stopper assembly designed for compatible PYREX 125 mL and 250 mL gas washing bottles. Manufactured by Corning, this reusable glass accessory incorporates a standard taper stopper, an integrated gas inlet tube and an extra-coarse fritted glass cylinder that distributes incoming gas through a suitable washing liquid. The fritted cylinder has a nominal pore distribution of 170–220 micrometres, producing relatively large gas bubbles while offering reduced resistance to gas flow compared with finer fritted distributors. The stopper is designed to support laboratory gas washing, gas humidification, gas absorption and gas-liquid contact procedures. It is particularly useful for replacing damaged gas distribution assemblies without purchasing an entirely new gas washing bottle. Its transparent laboratory glass construction makes it suitable for chemical laboratories, pharmaceutical research institutions, biotechnology facilities, universities and scientific research centres. Important: This product includes the replacement stopper assembly only. The glass gas washing bottle is not included. Key Features - Original Corning PYREX laboratory glassware accessory. - Replacement stopper for compatible 125 mL and 250 mL gas washing bottles. - Extra-coarse fritted glass cylinder. - Nominal pore distribution of 170–220 µm. - Approximately 12 mm diameter fritted cylinder. - 29/42 standard taper glass stopper. - Integrated glass gas inlet and distribution tube. - Suitable for gas washing, absorption and humidification. - Designed to provide relatively low gas-flow resistance. - Reusable laboratory glass construction. - Replacement component for compatible PYREX 31770 series gas washing bottles. - Supplied as one stopper assembly without the bottle. Specification Details Brand PYREX Manufacturer Corning Catalogue Number 31770-250ES Product Type Gas Washing Stopper Assembly Material Laboratory Glass Compatible Bottle Capacity 125 mL and 250 mL Stopper Type Standard Taper Glass Standard Taper Size 29/42 Fritted Distributor Glass Cylinder Frit Porosity Extra Coarse Nominal Pore Distribution 170–220 µm Fritted Cylinder Diameter Approximately 12 mm Gas Inlet Tube Integrated Bottle Included No Reusable Yes Sterility Not Supplied Sterile Quantity per Pack 1 Piece Quantity per Case 1 Piece Applications Gas Washing, Gas Absorption, Gas Humidification