Made from borosilicate glass Test Tubes With Rim-9800 - Advance Labs Scientific Limited Chemical Resistant Glassware United Scientific™ TT9800-H Test Tube W/ Rim, Borosilicate Glass 25 X 150mm Pk 72 60ml Test Tubes The TT9800-H Test Tubes come in a pack of 72 and a case of 288, making them a convenient and cost-effective option for large-scale experiments or laboratory... Glassware is highly resistant to water, neutral and acid solutions, concentrated acids and their mixtures as well as to chlorine, bromine, iodine, and organic matters. Description Pre-cleaned borosilicate glass test tubes with rims Tubes can be used for hot or cold applications, are reusable, and can be autoclaved Glassware is manufactured from low alkali Type 3., 3 borosilicate glass.