Sealed with a fritted disc and a #2 hose connection. Recommended for use under 15 PSI. Used wherever filter paper and membranes cannot withstand the chemical attack of the filtrate. Funnels are constructed with heavy-walled stems, and top rims are beaded for extra strength with a marking spot. Designed from Federal Specification DD-F-776.

Sealed with a fritted disc and a #2 hose connection. Recommended for use under 15 PSI. Used wherever filter paper and membranes cannot withstand the chemical attack of the filtrate. Funnels are constructed with heavy-walled stems, and top rims are beaded for extra strength with a marking spot. Designed from Federal Specification DD-F-776.

Sealed with a fritted disc and a #2 hose connection. Recommended for use under 15 PSI. Used wherever filter paper and membranes cannot withstand the chemical attack of the filtrate. Funnels are constructed with heavy-walled stems, and top rims are beaded for extra strength with a marking spot. Designed from Federal Specification DD-F-776.

This Buchner Funnel has a perforated plate instead of a fritted disc.