Columns are for use in general chromatographic work for extraction of components, with special applications in isoenzyme and protein studies, hemoglobin fractionation and desalting. Chromatography columns are precision-molded in 5 ? and 7 ? sizes from premium-grade, chemically inert plastics. …

Columns are for use in drug extractions, HPLC sample preparation, general chromatography applications and other research procedures and may also be used “piggybacked.” Columns measure 3-3/8 ? long and include a medium polyethylene filter matrix support. Large reservoirs and…