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I assume all parts are heated first because that’s how you ensure it’s sterile. It also serves to make a slight vacuum once cooled which will keep everything sealed.
I wonder if they actually use the same trick to actually put the lid on as-well to create as-tight of a seal as possible
I assume all parts are heated first because that’s how you ensure it’s sterile. It also serves to make a slight vacuum once cooled which will keep everything sealed.