Physically sterilization

This method is used to sterilize equipment / material that resists heat, pressure or radiation. Sterilization can be done by:a. Dry heatDry heat, usually used to sterilize laboratory equipment. For tools such as Petri dishes, bottles or materials such as starch, talc and the like. Generally use the oven. Is the effective temperature of 160oC for 2 hours., Researchers often use temperature of 175oC for 1.5 to 2 hours. For tools such as tweezers needle loop, the tip of the pipette, test tube lip / erlenmeyer / petri dish sterilization typically use methylated spirit lamp or Bunsen.