PYREX 31770-250C Gas Washing Bottle 250 mL with Coarse Fritted Cylinder

The PYREX 31770-250C Gas Washing Bottle 250 mL with Coarse Fritted Cylinder is a high-quality, reusable laboratory glass apparatus designed for gas washing, gas absorption, and humidification during chemical analysis, biological research, and scientific 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 29/42 standard taper hollow glass stopper with an integrated gas distribution tube. The apparatus incorporates a 12 mm diameter coarse fritted glass cylinder with a nominal pore distribution of 40–60 micrometres. This fritted cylinder disperses incoming gas into small bubbles through the washing liquid, promoting effective gas-liquid contact during gas purification and humidification processes. 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 31770-250C is particularly suitable for humidifying carbon dioxide-air mixtures used in cell culture incubators, helping laboratories maintain suitable humidity conditions for controlled cell cultivation. Its reusable construction and transparent design make it suitable for chemical laboratories, pharmaceutical research facilities, biotechnology institutions, universities, and scientific research centres. Key Features - Original PYREX laboratory glassware manufactured by Corning. - 250 mL nominal capacity. - Durable borosilicate glass construction. - Tall cylindrical bottle with stable hexagonal base. - Coarse fritted glass cylinder for gas distribution. - Nominal frit porosity of 40–60 µm. - Approximately 12 mm diameter fritted cylinder. - 29/42 standard taper glass stopper. - Approximately 8 mm outside diameter gas tubing. - Promotes uniform gas dispersion through washing liquids. - Supports gas absorption, gas washing, and humidification. - Suitable for humidifying carbon dioxide-air mixtures. - Transparent glass for observing gas bubbling 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 31770-250C Product Type Gas Washing Bottle with Coarse Fritted Cylinder Material Borosilicate Glass Capacity 250 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 Coarse Nominal Pore Distribution 40–60 µm Fritted Cylinder Diameter 12 mm Inlet/Outlet Tube Outside Diameter 8 mm Approximate Bottle Diameter 51 mm Approximate Height Without Stopper 240 mm Approximate Overall Height with Stopper 290 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