0.45 micron high capacity groundwater filter comparable to 600 sq cm surface area each. The SingleSample® High Capacity, Disposable Groundwater Filter Capsule is designed specifically for field filtering groundwater samples for metal analysis with 1/8' NPT threaded inlet and outlets with stepped hose adapter on the inlet side for in line filtering of pumped samples with up to 3/8' ID tubing. 600 cm² of surface area. An optional stepped barb can be threaded on each end for use of up to 1/2' tubing. Features a true membrane element, certification for 67 metals and 2 anions, filtering capacity of 1 liter for most turbid samples and 1/8' NPT treaded ends with stepped hose adapter on inlet side.