Bio-Rad Laboratories, Inc. Poly-Prep Columns AG 50W-X8 731-6214

Pkg of 50, 9 cm high, 2 ml of prepacked analytical grade 50W-X8 resin, 200-400 mesh, 63-150 particle size, hydrogen form, includes 10 ml reservoir  Poly-Prep® prepacked columns for gravity-flow chromatography provide convenience for sample preparation and other small-scale applications. The graduated 0.8 x 4 cm columns are constructed of polypropylene. Each column holds a standard bed volume of 2 ml AG® ion exchange resin and includes an integral 10 ml reservoir. A Poly-Prep stack cap, which allows connection to pumps, reservoirs, or columns in series, is also available.