for how may hour we can store mother milk in steel milk bottle of baby?please do let me know any other information related to it

A. See The timing is different from temperature to temperature on room temperature it is going to be about 60 minutes on the refrigerator temperature it has to be somewhere around 6 to 7 hours and if it is deep freezer then it can be a month or more so you can just work according to the things otherwise if you are looking for an exact timing then you can google it