All of the columns listed below are constructed of borosilicate glass and are rated at a maximum pressure of 15psi (1 bar). Five configurations are available: A - Luer-Lock, Non Jacketed: Fixed polypropylene end caps, polyethylene bed supports, Luer-Lock inlet and outlet fittings.B - Luer-Lock, Jacketed: Same as A (above), with a borosilicate glass jacket surrounding the column body for temperature control. C - Open-ended: Fixed polypropylene ends (outside of tube only), without jacket or end fittings. Requires 2 flow adapters.D - PTFE, non-jacketed: Threaded ends, removable PTFE fittings with shielded O-ring seals, 20 mum polyethylene bed supports, and 1/4-28 threaded tubing connections. Solvents contact only PTFE and borosilicate glass. E - PTFE, jacketed: Same as D (above), with an acrylic jacket surrounding the column body for temperature control.