Kimble 45060 KIMAX Reusable Glass Culture Tubes with Polished Rim and No Marking Spot. Made from N-51A borosilicate glass tubing with a fire-polished top rim and uniform wall thickness for maximum heat transfer and chemical resistance. Without a marking spot. Designed from ASTM Specification E982, Type IV requirements. The 6 x 50 mm size is often referred to as a "Durham Tube".
(Sample Photo Displayed. Individual items may differ from the image shown)
Cap. (mL): 75
O.D. x L (mm): 25 x 200