@lindenflower I think the ten minutes that has been mentioned is to boil the water first to kill any possible bacteria in the water that you will be placing the pieces in and then boil them for 5 minutes to sterilize. Be sure to place the pieces in the water as it is boiling to help keep them from touching the bottom of a metal pot. I boil the water for 10 minutes and then sterilize for 5 minutes.
Barbara

@lindenflower To be sure mycobacteria is killed requires 10 minutes of boiling water. No need to pre-boil to sterilize the water. In fact, I find it safer for the pieces to be heated gradually rather than being plunged into boiling water. I place the equipment in room temperature distilled water in a sauce pan and bring it to a boil (takes 12 minutes on low on my stove), then set the kitchen timer and boil gently for 10 minutes. When the timer rings, I turn the burner off and let the water cool slightly, then use tongs to lift the parts onto a dry paper towel. If you get them out soon enough,the hot water evaporates quickly.

I use a round silicon hot pad in the bottom of the pot to keep the pieces from contacting the hot metal, though it hasn't been an issue in my thick old pans.