Glass funnel with short stem and a 60° angle for precise fitting of filter paper.
- Borosilicate 3.3 glass for a high resistance to chemical attack, and mechanical and thermal shock.
- Designed from ASTM Specification E1905, Type 1, Class A requirements.
- Heavy uniform walls
- Molded rims
- Fire polished stem to give a long service life.
A funnel is a tube or pipe that is wide at the top and narrow at the bottom, used for guiding liquid or powder into a small opening. Funnels are usually made of stainless steel, aluminium, glass, or plastic. The material used in its construction should be sturdy enough to withstand the weight of the substance being transferred, and it should not react with the substance. For this reason, stainless steel or glass are useful in transferring diesel, while plastic funnels are useful in the kitchen. Sometimes disposable paper funnels are used in cases where it would be difficult to adequately clean the funnel afterwards (for example, in adding motor oil to a car).