Columns and cartridges for gas, ion, HPLC, low-pressure LC, and flash chromatography; includes pre-packed and open columns, packing, guard columns and accessories, and other supplies for flash chromatography.
No. 15 Ace-Thred at top and 2 mm bore, solid-PTFE stopcock-plug (tapered 1:5) at bottom. Supplied with nylon and FETFE™ O-ring for connecting 12.5 to 14 mm O.D. tube to column, and with tubing connector.
Low pressure (max. 7 psig) medium wall columns with reservoir. Greaseless PTFE insert with screw-thread attaches flow control valve to column. Precision all-PTFE valve and drip-tip.
Can be used to protect the TSKgel columns. When working with columns that contain smaller than 5 μm particles, Tosoh Bioscience suggests the installation of a pre-column filter in front of the (guard) column to avoid clogging the top frit.