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Increasingly , worldwide people pay attention to organic food.
Customers can buy organic foods. They always check the foods quality, and then buy them just confirming the information on the signal.
But many people want to confirm the chemical degree with thier own eyes, practically.
So, I thought that how about show the change of color by using litmus sticker.
This LITMUS Stickers are can be changed the color following the agricutural chemicals degree.I used this feature of litmus paper that can be changed to blue or red color when meet the acidic or basic liquid..
Jeonju city, South Korea
MI JANG YI JEONG YANG SE HEE LEE ROH JOO YEUN