Screw-Cap Microcentrifuge Tubes Our Screw-Cap Microcentrifuge Tube is ideal for any 

sample-processing or storage application imaginable-and especially for working with valuable or hazardous cells 

and materials. 

The extraordinary strength, safety and reliability of the Screw-Cap Microcentrifuge Tube lets you perform procedures that 

simply can’t be done with other tubes. Spin it, store it, transport it (even by air). 

Boil it, irradiate it, immerse it in the vapor phase of liquid nitrogen-it’ll stand up to the test! 

Inside the Screw Cap, our ethylene propylene O-Ring forms a secure and leak-proof seal. 

The Screw-Cap Microcentrifuge Tube ’s square threads won’t strip-and they’re on the outside of the tube, 

so you minimize the risk of contaminating your sample-or letting it contaminate you. 

Screw Cap Microcentrifuge Tube Benefits:  Sample Integrity: O-ring creates a positive seal that prevents 

leaking during processing, storage, or transport. Tube is made of inert virgin-polypropylene copolymer, 

to minimize the risk of altering samples.