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🧬 Seal your success with precision and style!
The RS-9-2 Rubber Stoppers are size #9, black rubber stoppers featuring two drilled holes, designed for secure fits on standard lab glassware including 5-gallon carboys. Sold in a convenient 1-pound pack, these stoppers support advanced STEM experiments by enabling controlled airflow or liquid transfer, making them a reliable choice for educators and lab professionals alike.
| Customer Reviews | 4.0 out of 5 stars 9 Reviews |
D**.
Fits the Old Glass Five Gallon Carboys.
This RS-9-2 Size fits the Five Gallon Glass Carboys, I use them on my first jug on my RO/DI Cascade system for the Ultra Pure water. See my comment on the RS-10-2 size plugs.
J**N
Shoppers beware of poor standard online products
The stopper is hard and does not fit properly on the conical flask. My son could not record the right data for temperature-volume graph and Pressure-volume graph. The poor boy was unable present good enough science project for thermal expansion of water. I odered twice to be sure of the standard. Terms and conditions for odering not favorable
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