These reusable glass round bottom Test Tubes are made of 3.3 borosilicate glass to reduce pH changes and contaminants potentially leached from soda-lime glass. 12mm Black Rubber Stoppers are made out of excellent grade rubber featuring low sulfur content. Do not use stoppers with food or drink.
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| 401X2 |
12x75mm Test Tubes, Borosilicate Glass, Round Btm, 5ml Vol, With Rubber Stopper, Karter Scientific 401X2 (Pack 10) |
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| 401X1 |
12x75mm Test Tubes, Borosilicate Glass, Round Btm, 5ml Vol, With Rubber Stopper, Karter Scientific 401X1 (Case 3000) |
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