Description
Borosilicate glass tubes with fire-polished top rims and uniform wall thicknesses for maximum heat transfer and chemical resistance. No marking spot. The 6 x 50 mm size is often referred to as a Durham tube. 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.
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