"Designed for bacteriological analyses of water using sterile membrane filters, and for analyses of suspended solids in water. Contents: * Borosilicate glass funnel, 300ml (FHGF300) * Fritted glass funnel base, 47mm (FHBG47) * Anodized aluminum spring clamp, 47mm (FHSC47) * Perforated silicone stopper, No. 8 (FHSTS8) Thick depth prefilter: 35mm Membrane prefilter: 47mm Dimensions: 22.9cm tall x 7.6cm in diameter Sterilization method: 30 UV, or autoclave without filter in place"