RPI Tamper Evident Micro-Tubes, Sterile, Graduated, Free Standing, 0.5ml, 500 Per Case

Unique micro-centrifuge tube features a tamper evident closure system. Simply attach cap to tube and the sealing ring is automatically in place. When the cap is loosened, the ring detaches to clearly indicate the tube was opened. Certified RNase, DNase, DNA and Pyrogen free.

Tubes are ideal for cryogenic work and withstand temperatures from -196°C to +121°C. Ideal for use in boiling, centrifuging (up to 17000g) and freezer storage applications. Manufactured of exceptionally high-quality, transparent polypropylene without the use of slip agents, plasticizers, mold release agents and biocide substances. Tubes feature flat cap with O-ring seal that provides a leak proof fit. Cap ensures a positive leakproof seal, time after time, keeping the integrity of small samples under even the most adverse conditions. Flat tops provide a writing surface and can be used with automatic capping machines in packaging industries. Tubes and closures are manufactured in a clean environment.