These reusable plastic white foam plugs are for use with test tubes and flasks.
- Provides a snug fit, yet permits free air flow
- Proven nontoxic to algae
- Breathable and non-absorbent
- Chemical resistant
- Springs back to original shape after repeated use
These plugs can also be used as a cleaner for lab pipettes, tubes, and vials, as well as industrial precision tubing.
Ordering information: Assorted Color Variety Pack includes 150 plugs each of the following assorted colors: red, green, yellow, charcoal, blue, and white.