The manufacturer will replace 400,000 cans of its baby formula free of charge.
The brand that radioactive cesium has been found is "Meiji Step", a formula designed for infants 9 months and older.
As the article by Sponichi below states, Meiji is the largest manufacturer of baby formulas with 40% market share. Meiji did its own testing and disclosed the number. Will other makers follow suit?
From Sponichi Annex (12/6/2011):
Additional information from Nikkei Shinbun (12/6/2011):
"Meiji Step", a baby formula manufactured and sold by Meiji (headquartered in Tokyo), one of the largest food manufacturers in Japan, has been found with the maximum 30.8 becquerels/kg of radioactive cesium by the company's testing. It is not known how radioactive cesium was mixed in, but the company thinks it is due to the Fukushima I Nuclear Power Plant accident.
According to the Ministry of Health and Labor, it is the first time that radioactive cesium is found in the baby formula, after the nuclear plant accident. Meiji will replace about 400,000 cans free of charge.
The level of radioactive cesium is below the provisional safety limit by the national government for baby formula (200 becquerels/kg). It has been pointed out that infants are more susceptible to the effect of radioactive materials than adults, and the Ministry of Health and Labor is to set the new standard for "baby foods".
According to Meiji, the effective dates of the baby formula that has been found with radioactive cesium are: October 4, October 21, October 22, and October 24, 2012. The effective date is on the bottom of the can.
Meiji is the largest manufacturer of baby formulas in Japan, with about 40% market share.
According to Meiji, 400,000 cans of the formula were processed in Meiji's factory in Kasukabe City in Saitama Prefecture, whereby the milk was dried between March 14 to 20. The raw milk came from Hokkaido, which was processed before March 11. The company thinks that during the process to air the milk to dry, airborne radioactive cesium released from the Fukushima I Nuclear Power Plant accident was mixed in.
So, Meiji was manufacturing powdered milk in the worst possible period. March 14 was when Reactor 3 blew up. Reactor 4 blew up (or made a loud noise and smoke was observed, according to TEPCO) the next day, and something really bad happened in the Suppression Chamber of Reactor 2, though no one says what it was. And still unexplained events happened on March 20 that spiked the radiation levels all over Tohoku and Kanto. And the company was airing the raw milk, without knowing the radioactive plume was hitting wide areas in eastern Japan.
The government knew. Many nuclear experts and researchers knew. No one bothered to tell the public. Some were threatened with termination or end of their careers. Some say they feared for widespread panic. Yet others were just collecting data so that they would be able to publish in a prestigious magazine several months later.