Out of the following the true statement regarding sterlization is :

Hot air oven : It is the most widely used method of sterilization by dry heat. Holding period of 1600C for 1 hour is used to sterilize glasswares, forceps, scissors, scalpel, all glass syringes, swabs, liquid paraffin, dusting powder, fat and grease. Bacterial vaccines are best sterilized by ‘Filters’. Flash method involves heating at 730C for 15 seconds. Holding method involves heating at 63 - 660C for 30 minutes.