Description
This rubber stopper with 1 hole – 24 mm can be used to seal test tubes. The student can insert pipettes, tubing or test equipment; such as a thermometer into the single hole in the centre of the stopper. The stopper is made from durable rubber, and can be used with strong chemicals, such as acids, alkalies, and ammonia.
Dimensions of the Rubber Stopper with 1 hole – 24 mm
2.5 cm diameter x 2.5 cm height / ( 1″ x 1″ )
Related Products
- every science classroom needs a Test Tube Rack – 16 mm
- keep safe around hot materials with the Crucible Tongs 20 cm
Further Reading and References
- read Greg McDonald’s blog on Safe Science in Montessori Elementary
- learn more about the Montessori Science Curriculum
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