Tainted milk deaths arrests
The two brothers, surnamed Geng, run a milk collection centre in Hebei province and are accused of adding melamine, a chemical used in plastics, to the milk to make it appear higher in protein, the official Xinhua News Agency said. They sold about three tons of contaminated milk a day, the report said, citing Hebei police spokesman Shi Guizhong.
Chinese investigators say melamine may have been added to the milk to fool quality testers after water was added to fraudulently increase the milk’s volume. Melamine is rich in nitrogen and standard tests for protein in food ingredients measure nitrogen levels.