Egg tag is an intuitive solution for consumers to know the freshness and quality of egg.
There are no simple and effective solutions to check the quality of egg.
By the help of egg tag, consumers can simply refer to the colors on the label to check whether the egg is broken or not.

UNNC, Ningbo
Jan — Mar, 2019


Supervisor:Dr. Xu Sun

#Package design
#Concept design



One-third of all food produced worldwide, worth about $1 trillion, gets lost or wasted in food production and storage systems.
— United Nations Environment Programme and World Resources Institute


A series of survey are developed to figure out the influence of
Food waste with over storage habit from consumers.
The most insightful results are presented as below.




Inspired by chemical indicator, the pH of solutions can be expressed in different colour scale,
What if the freshness of the egg can be expressed in different colours as well to help consumers indentify the egg quality.



Egg tag is a one-direction carbon dioxide chemical indicator filter which changes its color according to the amount of CO2 emits from the egg. That means the CO2 from the environment will not have an impact on the change of color.
Different color scale represents different freshness degree.
The chemical indicator is printed on a paper-based label and then pasted on the egg.









This design targets and aims to solve a simple but tricky problem in life, that is how to tell the freshness of an egg. Customers may open a bad egg without pre-notice which can lead to either food poisoning or contamination of other ingredients. This issue enlightens the design of egg freshness tag which is a paper based chemical indicator reacts with carbon dioxide by the change of color to inform the freshness level. Different colors represent different grades of freshness, green for fresh, yellow for stale and red for bad.