Polypropylene 1.1 mL V-bottom tubes have internal threads that accept screw caps for secure closure in ultra low temperatures. The polypropylene screw caps (sold separately) have silicone O-rings that maintain their integrity in vapor phase liquid nitrogen. Certified RNase and DNase free and manufactured to Class 10,000 regulations. Working volume: 0.8 mL with cap when freezing.
- Racked tubes have 10 racks of 96 (960 tubes)
- Bulk tubes have 960/pack