Is the egg float or sink test accurate?

United States
August 17, 2010 4:41pm CST
I happen to have a doz eggs that exp'd 6 weeks ago tucked in the back of my fridge. And seeing like most money is tight and eggs do fine refrigerated several weeks past the exp. So I was looking to see how do I test to make sure they are still ok to eat before I crack one open. I have found a site that says to test the eggs by puting them in water. If they sink they are ok, if they float they are spoiled? Is this true? As I'd like to possibly use them for a meal if possible.
7 responses
@Lochrin (75)
• Australia
18 Aug 10
Completely accurate. An older agg, as part of aging (or going bad) will break down and form a gas. By the time the egg floats the gas is forming, and therefore the egg is on its way out. Within a few more days the breakdown will be active, and you will have bad egg gas. We did a full blown experiment with eggs over a 2 week period in science at school, and you could pick with 100% accuracy bad and good eggs based on the float/sink principle. Interestingly.. goose eggs behave differntly.. but you seem to be talking chicken eggs.
• United States
18 Aug 10
yep chicken eggs, I don't know that I could find goose eggs around here for sale! I was figuring there was something happening in the egg that would cause it to float when it goes bad.
@TheCatLady (4695)
• Israel
20 Aug 10
Don't waste good food. The expiration dates are no way near accurate. The best way to tell if eggs and dairy are OK to eat is to look and smell. If they look OK, and smell OK, they are. There are many foods that are good way after their expiration date.
@kukueye (1761)
• Malaysia
18 Aug 10
i think i agree the some the responds that said the air bubble increases as the egg get older and hence it floats.Thinking about it rotten egg will produce more air also and the embro will shrink making the egg float. Expired egg few months are tasteless and have rotten smell even when deep fried, it is dry and less watery, i tried before.Yuck.
@savypat (20246)
• United States
18 Aug 10
I think this is a safe test. They float because they have started to form gas from going bad. What ever you do make sure you cook them all the way. And if you get any type of bad smell throw them out.
• United States
18 Aug 10
I think even if the egg is still ok or not, it will still sunk..
@TrvlArrngr (4058)
• United States
17 Aug 10
wow. i never heard about this. now i hav to try it myself. thanks
@ravinskye (8242)
• United States
17 Aug 10
I've heard about doing that test too. I think that it works. In all the times I have boiled eggs to make deviled eggs or just hard boiled eggs for a sandwhich they have always sank. Only one time did I have one float so I threw it out. I say give it a try, maybe just with one. If it sinks, cook it up and see how it tastes. Then you'll know if you can use it or not. Or try one that floats and see if it tastes bad lol.