Sterile irradiated hydrophobic pipette tip

A sterile article of manufacture for dispensing a liquid comprising a housing having an opening for dispensing a liquid, said housing is molded from a mixture of polystyrene and a fluoropolymer and sterilized by irradiation, said fluoropolymer selected from the group of fluoropolymers consisting of polyvinylidene difluoride, vinylindene fluoride and hexafluoropropene having a concentration of 100 to 2,500 parts per million fluoropolymer in polystyrene, said concentration being effective to maintain a hydrophobic outer surface after irradiation, and said housing exhibiting a contact angle for aqueous fluid of greater than 80.degree. following sterilization radiation of the outer surface of the housing.