Funnel: A Key Tool in Laboratories What Makes a Glass Pressure Equalizing Funnel Essential? Glass Pressure Equalizing Funnels are must-have instruments in lab settings, designed for consistent liquid transfers. The addition of a sidearm ensures pressure release during transport, while their borosilicate glass construction provides both resilience and chemical resistance. This makes them ideal for many laboratory tasks. Constant Pressure Equalizing Funnels are Cylindrical in shape. Manufactured from Borosilicate 3.3 Glass, these funnels come with Interchangeable Stopper. These Funnels are Graduated for reading the volume and have Glass Stopcock. Packing: 1Pc/Pk Item Code Capacity (ml) Cone NS Socket NS Bore 18.00.0501GL 50 24/29 19/26 2.5 18.00.0502GL 100 24/29 24/29 2.5 18.00.0503GL 250 24/29 24/29 2.5 18.00.0504GL 500 24/29 24/29 4 18.00.0505GL 1000 24/29 24/29 4