Argos PB25 Disposable Plastic Serological Pipette, 25mL Capacity, Green, Bulk Pack (Case of 150) Pipettes are sterile, Pyrogen free and utilize a unique filter Plug to prevent overfilling Permanent graduations prevent ambiguity and precise reading as well as accurate dispensing to 2 percent Made from transparent medical grade polystyrene sterilized by gamma irradiation Pipettes meet the A.P.H.A. Standards for the examination of dairy products