In May 2024, our laboratory discovered that it was an internationally regulated substance that was not registered.
It was confirmed that the employee was in possession of thorium nitrate, and we have reported this to the government.

The radiation level at the location where the debris was found was approximately the same as that in a normal natural environment.
There will be no impact on employees or the surrounding area.

Going forward, we will strive to manage information appropriately in accordance with laws and regulations.

1. Location where possession was confirmed
Izumiotsu City, Osaka Prefecture
Our laboratory reagent storage

2. Internationally controlled substances in possession
Thorium nitrate tetrahydrate 25g (glass bottle: unopened, manufactured in August 1964)

3. Radiation Dose
In front of the reagent storage room: 0.11 microsieverts per hour
In front of the reagent storage room: 0.11 microsieverts per hour

4. Storage conditions
Stored in a locked safe in a double sealed plastic bag in a locked storage room