NALGENE® 315 Filter Funnel with Clamp, polysulfone funnel; polypropylene copolymer cover; TPE cap; silicone gasket, No. 8 rubber stopper; aluminum clamp

Durable, break-resistant plastic filter funnel complete with clamp for use in microbial and particulate analysis. Same funnel design as glass funnels – but break resistant. Clear polysulfone is non-toxic, exhibits low protein binding and is easy to clean. Upper reservoir is graduated in 25mL increments from 100 to 250mL. No leakage or bypass even after autoclaving. Membrane support plate firmly holds 47mm membrane. Snug-fitting cover has three ports, each fitted with friction-fit cap. Spring-loaded clamp holds funnel and stem together yet allows easy access for retrieval and replacement of membrane. Clamp allows one-handed operation. Funnel may be used with any filtering flask or filter manifold which accepts a No. 8 rubber stopper with a 9/16 inch (15mm) hole. Autoclavable/Graduated.