PPCO, sealing cap PP screw closure with silicone gasket. Translucent bottles with excellent chemical resistance. Molded-in graduations. Designed for pelleting applications such as cell culture harvesting and protein biochemistry, including ammonium sulfate precipitations. Excellent for use in refrigerated or non-refrigerated centrifuges up to 27500 x g. For proper performance these bottles must be filled to at least 80 % of the total capacity. Must be used with NALGENE adapter for conical-bottom centrifuge bottles (Cat. No. DS3126-0175). Overall height with closure and adapter is 143 mm. Autoclavable, graduated, leakproof.