Designed to speed up and increase sample volume throughput while reducing thumb pressure. New and larger filters offer increased surface area, decreased hold-up volumes, and can withstand higher operating pressures than 13mm and 25mm sizes — but at the same low cost. Available in polypropylene housing with nylon, PTFE®, and polypropylene membrane filters. With or without built-in glass prefilter. Packs of 50, 200 or 500.