Simple absorption column for rapid preparative separations with moderate resolution. Modified with a #25 Ace-Thred connector in place of 35/20 joints, for grease free connection. Internally threaded connector & Nylon bushing make a pressure-tight, O-Ring compression seal with glass stem on reservoir & flow adapter. Bushing replaces joint clamp. Column & reservoir, only, are Epoxy Coated. Column available with or without Por.B (70-100m) fritted disc sealed in. Order each item separately for complete system.