Midland Scientific Inc. Rubber Stopper with 2-hole, Size 7, 14/lb
Supplies and Accessories
The Midland Scientific Inc. size 7 two-hole rubber stopper provides access to a test tube's contents while still creating a tight seal.
The Midland Scientific Inc. size 7 two-hole rubber stopper provides a tight seal to prevent spills and evaporation. This black stopper is composed of high-quality rubber for long-term rigorous use. The pre-drilled holes provide access for glass tubes, f unnels and thermometers. Each package contains 14 stoppers.
Made of black rubber
Two pre-drilled holes for easy access
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