Thermo Scientific* Nalgene* Heavy-Duty HDPE Vacuum Bottles
- White polypropylene screw caps
- Bottle/flask/funnel closure systems with closures smaller than 100mm, after they are filled with
water, inverted, withstand air pressure of 2psig for 2 minutes, and no water escapes.
- Bottle/funnel/flask closure systems of larger than 100mm after they are filled with water, inverted
for 15 minutes, and no water escapes.
- Note: these tests, using other liquids, may not yield the same results
See more at http://www.thermoscientific.com/en/product/nalgene-hdpe-heavy-duty-vacuum-bottles-closure-lab-pack.html