These disposable, ultra-clean, polypropylene columns are packed with high performance microparticles. They are used in preparing samples for HPLC, GC or other analytical methods that require liquid sample concentration, enrichment, or cleanup. The Speedisk® columns shorten run times, increase capacity, and may eliminate pre-filtration and evaporation steps. Sorbent mass: 50 mg. Column size: 3 ml.