The tubes are self-standing and feature a conical bottom with a skirt. 30mL screw cap tubes are available in transparent polystyrene or opaque polypropylene.
- Clear polystyrene or natural polypropylene in color
- Polystyrene container comes with polypropylene cap
- Polypropylene container comes with polyethylene cap
- Not graduated
- Not sterile
- Spin Rate: Polystyrene: 4000 RPM & Polypropylene: 5000 RPM
- Sold in full cases only