Pack of six test tubes. Made of high-quality borosilicate glass (just like Pyrex) that can be heated directly in an open flame. 100 mm tall x 13 mm OD with 11 mm inside diameter. Approximate volume is 9 ml. Uses No. 00 stopper or No. 2 cork.
Note: Due to supply limitations, these test tubes may not have the white marking spots shown in the photo.
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