Manufactured from type I, class B borosilicate glass.

• Chemically inert
• High heat tolerance
• Uniform dimensions
• Convenient dispensing packages

Each tube is heat-treated at temperatures exceeding 500 °C (932 °F) immediately before packing, which eliminates contamination, increases strength, and reduces breakage. VWR® disposable culture tubes are resistant to chemical attack and weathering. Contents will not leach out and contaminate solutions. Borosilicate glass construction prevents pH change in laboratory tests. Tubes feature well-rounded bottoms and fire-polished tops free of rough edges. Dimensional specifications of these tubes are rigidly controlled for reliable, uniform results. Tubes are clean-sealed in a convenient dispensing package to keep them free from dust and other particulate contamination.