The Cap is provided with a built-in seal ring making the vial leakproof. 

The base of the vial has longitudinal grooves which give it a non-twisting character when placed in a vial rack.

As the name suggests, these vials are commonly used for storage of biological material, human & animal cells at temperature as low as -190°C. 

Capacity: 1.0m, 2.0ml, 5.0ml