- Boil-proof cap
- Withstand 28,000 x g
- Easy to open, easy to close
- Double, high pressure locking ring
- RNase, DNase and pyrogen free
- Unsurpassed clarity
- Frosted writing surface and graduations
- Ultra smooth interior-low liquid retention
- Made from highest quality, virgin, single melt polypropylene
Our latest 1.7 ml microcentrifuge tubes with Posi-Click design incorporates over 20 improvements that have made these tubes our #1 seller. The tubes seal easily with a distinct "click" and stay closed through incubation, freezing and boiling procedures. The unique closure system provides a tight seal that is actually strengthened by internal pressure. It will withstand boiling for 5 to 10 minutes. These tubes represent our fourth generations of improvements, incorporating over a dozen advanced features.