Glass Penny Head Glass Hollow Stopper for 14/20 Outer Joint Glass, Borosilicate Glass,with Closed Bottom
Special Features
- 34/45 Joint Hollow glass stopper;
- Borosilicate Glass, low expansion rate, high strength, high hardness, high temperature resistance and resistance to 200 ℃ temperature difference.
- High light transmittance, high chemical stability, acid and alkali resistance.
- Easy to clean and rotate in or out. Grooves in the sides help prevent slippage,Reusable High quality.
- Use the hollow glass stoppers to seal lab glassware such as flasks, separatory funnels, cylinders.
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