Borosilicate glass tubes with fire-polished top rims and uniform wall thicknesses for maximum heat transfer and chemical resistance.
- The 6 x 50 mm size is often referred to as a “Durham tube”
- No marking spot
- Designed from ASTM Specification E982, Type IV requirements
- Manufactured from 51 expansion borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class B requirements