Centrifuge tubes feature black printed graduations and a white marking spot. They are available with two cap designs, the original plug seal and a new flat top rim seal for easy removal and labeling. Both provide a tight, secure seal. Each lot of centrifuge tubes is tested for leakage. Available in polyethylene terepthalate(PET) for improved optical clarity, or polypropylene (PP) for improved thermal properties. Cases of 500, packaged 25 per sleeve or in racks of 25 or 50.
