PYREX 31770-500EC Gas Washing Bottle 500 mL with Extra Coarse Fritted Cylinder

The PYREX 31770-500EC Gas Washing Bottle 500 mL with Extra Coarse Fritted Cylinder is a high-quality, reusable laboratory glass apparatus designed for gas washing, gas absorption, humidification and controlled gas-liquid contact during scientific and chemical laboratory procedures. Manufactured by Corning from durable borosilicate glass, this tall-form gas washing bottle features a transparent cylindrical body, a stable hexagonal base and a removable standard taper hollow glass stopper incorporating an integrated gas distribution tube. The apparatus incorporates a 12 mm diameter extra-coarse fritted glass cylinder with a nominal pore distribution of 170–220 micrometres. The relatively large pores allow incoming gas to disperse through the washing liquid with lower resistance than finer fritted distributors. During operation, gas enters through the central vertical inlet tube, passes through the submerged fritted cylinder, bubbles through the washing solution and exits through the sidearm outlet. The PYREX 31770-500EC is particularly suitable for humidifying carbon dioxide-air mixtures used in cell culture incubators and other laboratory applications requiring controlled gas treatment. Its transparent glass construction allows convenient observation of gas bubbling and liquid levels, making it suitable for chemical laboratories, biotechnology facilities, pharmaceutical research institutions, universities and scientific research centres. Key Features - Original Corning PYREX laboratory glassware. - 500 mL nominal capacity. - Durable borosilicate glass construction. - Tall cylindrical bottle with stable hexagonal base. - Extra-coarse fritted glass cylinder for gas distribution. - Nominal frit porosity of 170–220 µm. - Approximately 12 mm diameter fritted cylinder. - Standard taper 29/42 hollow glass stopper. - Approximately 8 mm outside diameter gas outlet tubing. - Promotes gas-liquid contact during washing and absorption. - Lower gas-flow resistance than finer fritted distributors. - Suitable for humidifying carbon dioxide-air mixtures. - Transparent construction for observing gas bubbles and liquid levels. - Reusable for repeated laboratory applications. - Supplied as one complete gas washing bottle with stopper and fritted cylinder. Specification Details Brand PYREX Manufacturer Corning Catalogue Number 31770-500EC Product Type Gas Washing Bottle with Extra Coarse Fritted Cylinder Material Borosilicate Glass Capacity 500 mL Bottle Style Tall Form Bottle Shape Cylindrical Base Design Hexagonal Neck Style Short Stopper Type Hollow Glass Standard Taper Stopper 29/42 Fritted Distributor Glass Cylinder Frit Porosity Extra Coarse Nominal Pore Distribution 170–220 µm Fritted Cylinder Diameter 12 mm Inlet/Outlet Tube Outside Diameter 8 mm Approximate Bottle Diameter 63 mm Height Without Stopper 290 mm Height With Stopper 340 mm Colour Transparent Sterility Non-Sterile Reusable Yes Quantity per Pack 1 Complete Bottle Quantity per Case 1 Complete Bottle Applications Gas Washing, Gas Absorption, Gas Humidification, Cell Culture Research