Food testing strips / Food testing strips

Existing packaged food consumers need to find QS quality and safety signs, production date, shelf life has expired.There will be some of the problems:Can not find the production date printed on which;word misjudge unclear;Language differences of each country to buy foreign food is not easy to identify, some unscru-pulous businessmen arbitrarily altered the production date of a problem. Expired food associated microbial exce ugh the microbial content of the test paper for food packaging bag,as well as the pH of the test.Due to changes in color in the test strip.Bags Food corresponding control test strip color changes,dipstick half exp-ose