Why are Chinese people using home food safety tests?
17 July 2013 Last updated at 00:00 BST
In 2008 six infants died and 300,000 babies suffered with painful kidney stones after drinking tainted milk powder in China.
Five years on, sales of home food safety tests are soaring online in the country.
How worried are Chinese people about food safety?
Celia Hatton explains how families are testing food themselves at home.