KIMBLE® Reusable Unmarked Culture Tube, 13 x 100 mm, 10 mL, 720/pk

Borosilicate glass tubes with fire-polished top rims and uniform wall thicknesses for maximum heat transfer and chemical resistance.

• Manufactured from 51 expansion borosilicate glass conforming to USP Type I and ASTM E438, Type I, Class B requirements
• The 6 x 50 mm size is often referred to as a "Durham tube"
• No marking spot
• Fire-polished top rims and uniform wall thickness for maximum heat transfer and chemical resistance