This 2mL disposable pipette is sterile, made of polystyrene, and is standard type. It has no suction adapter, 279 overall length, .01 graduations, and is in single wrap packaging. Crystal grade polystyrene is used for consistency in manufacture and maximum clarity. Easy to read, crisp, black printed graduations enable the pipettes to be used accurately to +/-1%. Sterility is guaranteed by gamma radiation at a license holding irradiation plant, which follows the relevant recommendations in the DHSS Guide to Good Manufacturing Practice for Sterile Medical Devices and Surgical Products. Sterilin® pipettes are tested for pyrogencity, and have a pyrogen level of less than .25 EU/mL. Dynalon® #: 502754-02.