Kimax 45050-25200 N-51A Borosilicate Glass 75mL Test Tube, with Lip and No Marking Spot, Clear (Pack of 24)
Test tube made from N-51A borosilicate glass with a sturdy lip and uniform wall thickness for maximum heat transfer and chemical resistance.  Durable white ceramic enamel marking spot on each tube.  25 x 200 (O.D. x Length).  75mL Overflow Capacity.  Kimble #: 45050-25200.