Midland Scientific Inc. Rubber Stopper with 1-hole, Size 4, Black, 30/lb
Supplies and Accessories
The Midland Scientific Inc. 4 size rubber stopper with 1-hole can be used to seal the opening of a container when you need to shake its contents for an experiment.
The Midland Scientific Inc. 4 size rubber stopper with 1-hole needs to be inserted in a test tube for preventing its contents from getting spilled or evaporated. Available in black color, it makes sure the gases created during a chemical reaction do not escape from the beaker. This size 4 rubber stopper is a resilient lab accessory that can be expected to last for a long time. Having a single hole, this lab accessory allows you to insert a glass tube through it into the test tube for pouring liquids o r collecting the gases emitted from it into another container. High-quality rubber is used to make this stopper, making it thermal and chemical resistant. This package includes 30 rubber stoppers.
Made of rubber in black
Contains one pre-drilled hole
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