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RS-9-2 Rubber Stoppers, Size 9, Drilled 2-Holes (1-Pound Pack),Black

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$15.58

$ 7 .99 $7.99

In Stock
  • Rubber test-tube stopper
  • Size #9
  • Two hole
  • Black
  • Includes 1 lb. of stoppers


Science education products incorporate applied math and science principles into classroom and homeschool-based projects. Teachers in pre-K, elementary, and secondary classrooms use science education kits and products alongside science, technology, engineering, and math (STEM) curriculum to demonstrate STEM concepts and real-world applications through hands-on activities. Science education projects include a broad range of activities, such as practical experiments in engineering, aeronautics, robotics, energy, chemistry, physics, biology, and geology.

GSC International distributes science education materials and laboratory supplies. The company, founded in 1993, is headquartered in Nixa, Missouri.


John
Reviewed in the United States on December 18, 2019
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
Deborah M.
Reviewed in the United States on December 13, 2018
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.