Can any one tell me procedure to sterilize bottle sterilizer?

Question

can i use citric acid mono hydrate used for culinary use ,what quantity do i have to use?

Answer 1

you don't need to sterilize a bottle sterilizer . If using a microwave sterilizer the steam the sterilizes the bottles dose the sterilizer to.  

Answer 2

What I do is just fill the sink with hot water and washing up liquid (just what you use or your dishes) and give it a good scrub. If it is a microwave sterilizer the steam will keep it sterile.