These Drying Cartridges are designed for convenience and safety. Simply thread the 32 or 45mm bottom cap onto System 45 glassware, insert drying cartridge on top of the cap, thread top cap over cartridge. Desiccant may be placed directly between the two caps by placing two Zytex® liners in the caps and filling the top cap with desiccant. Drying cartridges may also be used with all glassware using GL-32 or GL-45 threads. Supplied with top and bottom cap and one drying cartridge
