Stopper Cross Reference Chart
This handy guide lets you know which stopper goes with your size test tube or flask.
Vacation Notice: We will be on break from July 10 through July 18, 2026. No orders will be processed during this time away. We will return for regular business on Monday July 20th. Thank you!
This handy guide lets you know which stopper goes with your size test tube or flask.
The PYREX® test tube dimensions are 12mm O.D. X 75 mm L. No rim. Ungraduated. NC-0993
The PYREX® test tube dimensions are 16mm O.D. X 100 mm L. Round bottom. No rim. Ungraduated. NC-5497
