Centrifuge tubes are precision-made, high-strength tubes of glass or plastic made to fit exactly in rotor cavities. They may vary in capacity from 50 mL down to much smaller capacities used in microcentrifuges used extensively in molecular biology laboratories. Microcentrifuges typically accommodate disposable plastic microcentrifuge tubes with capacities from 250 μL to 2.0 mL.
Larger samples are spun using centrifuge bottles, which range in capacity from 250 to 1000 millilitres. Although some are made of heavy glass, centrifuge bottles are usually made of shatter-proof plastics such as polypropylene or polycarbonate. Sealing closures may be used for added leak-proof assurance.
- Made of durable, chemical-resistant, clear polypropylene
- Black printed graduations are marked in 5mL increments from 5 to 50mL
- Large white marking area makes labeling samples easy
- With conical bottoms
- Tubes are sterilized by gamma radiation
Two Cap Styles
- Both styles offer secure, leak-resistant seals
- Blue plug-seal closure features double-start thread design for an exceptionally tight seal
- Flat-top caps offer faster handling and allow you to label the top of the tube