Test Tube, PYREX* 3mL, 10x75mm, are made from special tubing to give the optimum wall thickness. They are well annealed, resistant to heat and chemically stable. These tubes have a white marking spot. Beaded rims are fire-polished.
Kimax Gas Measuring Tube, Material: High quality borosilicate glass, The top is closed with the tube graduated from the top down, Dimension: 50 x 0.1 mL