Similar to CG-1198 but with a COARSE porosity disc sealed into the lower end of the column for packing support. Column is constructed using MEDIUM WALL tubing. Can be used with optional CG-1201 flow controller and CG-1200 reservoir. Lower end of the column has a round bottom. Connections between the column, reservoir and flow control adapter are spherical joints connected with CG-150 stainless steel pinchclamps.