VVS 18x150 3.3 Borosilicate Glass pack of 100 Test Tube Flat Mouth Round Bottom

Complete 100 piece set containing 50 borosilicate glass test tubes and 50 rubber cork stoppers
Features flat mouth round bottom design

The Vvs Borosilicate Glass Test Tube Set with Rubber Cork Stoppers is crafted for high reliability across school, college, scientific research, and professional laboratory environments. Manufactured using high-grade 3.3 borosilicate glass, these test tubes offer high thermal stability and chemical resistance for holding, mixing, and observing liquid or solid samples. The 18x150 mm size specification provides ample capacity while remaining easy to handle and mount on standard lab racks. Designed with a flat mouth rim and a classic round bottom, these glass test tubes ensure smooth liquid pouring and uniform heat distribution during thermal procedures. The included 50 rubber cork stoppers create an effective airtight seal that protects contents, such as powders or liquids, from moisture exposure and oxidation. This comprehensive 100-piece laboratory glassware collection offers durable, multi-purpose utility for classroom practicals, scientific experiments, sampling, and liquid storage.