Reusable Borosilicate Glass Tubes with Plain End 5 mL 试管_Pack of 72

All sizes except 6, 22, and 25mm O.D. have marking spot

Rimless for greater convenience in plugging and rack storage. Walls and bottoms are of uniform ­thickness. Ends are fire-polished.

Cat. No 9820-12 is a Kahn tubes.

Cat. No. 9820-13 is a Wasserman tube.