Sharp instruments may be sterilized with-

Hot air is useful for sterilizing aicles such as glassware, syringes, swabs, dressing, French chalk oil , Vaseline and sharp instruments. The drawback of hot air is that it has no penetrating power and is not suitable for disinfection of bulky aicles such as mattresses Ref: 25th edition, Park's Textbook of Preventive and Social Medicine, Page no. 140