13mm rubber stoppers/Vial Rubber Bottle Stoppers Self Healing Injection Ports. Fit with 1/4 inch or 7mm hole opening.
13mm Rubber Stoppers
- fits for 7 mm or 1/4 inch diameter hole opening
- Smaller size makes it more sanitary and easy to use and easier than bigger rubber stoppers
- Great for liquid culture, BRF Jars, injection, Supplemented substrate jars, Grain Masters .stoppers can be used to make self-healing injection ports in Mason jar lids or medicine bottles.
- 100% Autoclavable