How many ways are there to sterilize medical devices***? Please ask the experts.

Medical device disinfection has a physical sterilization method 1 autoclave sterilization, 2 boiling sterilization 3 fire sterilization 4 dry baking sterilization.

Chemical sterilization method [disinfection method] 1 drug immersion method; such as 0.1% Jie Ermian, 75% alcohol, etc.. 2 drug vapor method such as formaldehyde gas.