This is not a answer backed by any actual statistics.
But... as I remember, food requiring refrigeration should not be kept out at room temperature more than 4 hours. After this time, there is an unsafe amount of bacteria on the product.
The important thing to keep in mind is that ALL food has bacteria on it and all refrigeration does is SLOW the growth of it. So taking food out for an hour four times would be the same as taking it out straight for 4 hours. It's the total amount of time the food sits at room temperature - and I believe that the "magic number" is 4.
Hope this helps.
Milk can last for about 2 hours at room temperature before it spoils.
Buttermilk can sit out at room temperature for about 2 hours before it spoils. After that, it should be refrigerated to maintain its freshness.
Milk can last for about 2 hours at room temperature before it starts to spoil.
Milk will typically last about two hours at room temperature before it starts to spoil.
Milk is generally safe to consume at room temperature for about two hours before it starts to spoil.
Milk is generally safe to consume at room temperature for about 2 hours before it starts to spoil.
Milk can stay at room temperature for about 2 hours before it starts to spoil. After that, it should be refrigerated to keep it fresh.
Sealed cream cheese can be left out at room temperature for up to 2 hours before it spoils. After that, it should be refrigerated to maintain freshness and prevent bacteria growth.
Milk can sit out at room temperature for about two hours before it starts to spoil. It is best to refrigerate milk promptly to keep it fresh.
Milk can last unrefrigerated for about 2 hours before it spoils.
Unopened milk can sit out for about two hours before it spoils.
Milk can be left out at room temperature for about two hours before it starts to spoil. After that, it should be refrigerated to keep it fresh.