In the laboratory, we often see various types of funnels: triangular funnels, separatory funnels, long-neck funnels, Buchner funnels, etc.

In terms of material, there are distinctions between glass and plastic. Fluoroplastic funnels, compared to glass funnels, have the following main advantages:

1. Fluoroplastic material is drop-resistant and not easily broken, making it reusable.

2. Resistant to strong acids, strong bases, and most organic solvents.

3. Low background, no dissolution or precipitation, ensuring no contamination of samples.