GLASS COLUMNS WITH RESERVOIR Gravity chromatography column manufactured from medium wall tubing with PTFE stopcock and in-line reservoir for containing liquid buffer Standard Taper joint size 24/40 These columns may be used alone or in combination with 420575-2440 flow control adapter Glass wool (not supplied) may be used as a support for the packing material Custom sizes and plastic safety coating are available upon request Manufactured from 33 expansion, low extractable borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class A requirements Column ID (mm) : 25 Column Length (mm) : 300 Nominal Volume (mL) : 136 Reservoir Capacity (mL) : 250 Stopcock (mm) : 2 Case Qty : 1