Designed for bacteriological analysis of water using 47mm sterile membrane filters. Also applicable for analysis of suspended solids in water using 47mm depth filters. Complete set includes a borosilicate glass funnel and base., anodized aluminum spring clamp, and perforated silicone stopper. Parts are available seperately. Filter Diameter: 47mm, Filtration area is 9.6cm². Capacity: Funnel: 300ml, Flask: 1L. Outlet fitting: 6mm (1/4") O.D. tubulated cap sidearm to vacuum. Prefilter Diameter: Thick Depth Prefilter: 35mm. Membrane Prefilter: 47mm. Dimensions: Height 22.9cm, Diameter 7.6cm. Sterilization Method: 30UV sterilize or autoclave without filter in place.