Ideal for applications in freezer storage, autoclaving, boiling, or irradiation.

• External ridges fit rack serrations and allow one-handed opening

Colored PPCO screw caps are fitted with an ethylene propylene O-ring for reliable, leakproof performance. Compatible with most microcentrifuges with fixed angle heads. Withstands over 20000×g.

Tubes are made of reusable polypropylene copolymer (PPCO). Seamless conical construction with squared external threads prevents hang up of samples and reduces contamination.