Colored cap centrifuge tubes are the ideal solution for easily color coding samples for quick identification, customization and increased productivity. Centrifuge tubes are used for sample storage, Collection and experimental procedure. They are also used for pelleting cell material and may be used for bacterial culture growth. Tubes are manufactured from virgin polypropylene and are autoclavable. Caps are manufactured from high density polyethylene (HDPE). tubes have printed graduations and a large white marking area. Max RCF is 12, 000G. Temperature range of -80°C to 120°c. Sterilized by irradiation (SAL 10-6), RNase/DNase free and non-pyrogenic. Every case is printed with the lot number for quality traceability.