Samples can be easily viewed through Thermo Scientific™ Nalgene™ clear polystyrene sterile conical bottom centrifuge bottles, an economical single-use solution for low-speed, high-volume cell harvest, centrifugation, and protein purification. These conical bottom centrifuge flasks are ideal for sterile cell cutting applications and work perfectly with Thermo Scientific™ Fiberlite™ carbon fiber rotors. Bottles are individually packaged and ready to use.