You must order radioactive materials in millicurie (mCi), even though the materials are frequently measured in microcurie (µCi).
If you need to convert a microcurie value to a millicurie value, see the table below.
| Microcurie (µCi) | x 1/1000* | Millicurie (mCi) |
|---|---|---|
| 1 (µCi) | = | .001 (mCi) |
| 10 (µCi) | = | .01 (mCi) |
| 100 (µCi) | = | .1 (mCi) |
| 1000 (µCi) | = | 1 (mCi) |
*Multiply the µCi value by 1/1000 or .001
Note: A curie (Ci) is a unit of radioactivity named after the French physicist and chemist Marie Curie. The prefixes milli and micro are from the metric system and represent .001 and .000001, respectively. So, a millicurie (mCi) is .001 curie. A microcurie (µCi) is .000001 curie.