Sign up for an Award
Participate with your entry in one of our professional or student awards.
Sign up for an awardLearn more:
Unsupported browser
You are using an outdated browser. Please upgrade your browser to improve your experience.
We check We paints over the egg shell with H2S reactant, which can turn to black from transparent as it react with H2S. When eggs becomes less fresh and start to release the H2S, which makes egg smell stinky, the black pattern come out and show freshness which depends on the H2S desity.
So, don't eat broken eggs!
National Yunlin University of Science and Technology (NYUST)
Yunlin, Taiwan