Heavy, thick-walled filter funnels with 60° angles.

• Made of high quality Borosilicate 3.3 glass that is built to last and withstand multiple uses
• Heavy construction provides greater mechanical strength and prolonged life with harder than normal usage
• Features thick, uniform walls that allow for increased durability, ease of use and continual flow of liquid

Autoclavable, with superior chemical durability. Low temperature gradient - can withstand high temperatures and thermal shocks.

Eisco Labs Borosilicate glass has the following heat tolerances:
- Strain point 515 °C
- Annealing point 565 °C
- Softening point 820 °C