The Scient milk powder produced after September 16 last year was tested safe for babies, said quality watchdog in the southern Guangdong Province on Wednesday.

"We have tightened inspection of dairy products since last September 16," said an official surnamed Li with the food quality administrative department of the Guangdong Provincial Bureau of Quality and Technical Supervision.

"We even started weekly quality test for dairy products since this March," Li said, noting that the quantity of melamine in the milk powder was within the national safety level.

According to local media report, a child from Beijing was fed with Scient milk powder since September 2006 and was later tested calculi from the kidney. The angry father Guo Li sent the milk powder, produced on March 17 2008, to the State Food and Drug Administration, who later confirmed that the quantity of melamine in the milk powder was 100 times higher than safety level.

The Guangdong-based Scient Infant Nurture Co., Ltd said in a notice on its website that the sample sent by Guo was "produced before Spetember 14", while the company recalled all the products produced before the date.

It didn't give details how much powder was recalled.

Melamine-adulterated milk powder became one of the topical issues in 2008, killing at least six Chinese infants and sickening almost 300,000.

(Xinhua News Agency June 11, 2009)