Question: how many dpm in a microcurie?
Answer: The more curies present, the greater amount of radioactivity and emitted radiation. Common fractions of the curie are the millicurie (1 mCi = 1/1,000 Ci) and the microcurie (1 μCi = 1/1,000,000 Ci). In terms of disintegrations per unit time, 1 μCi = 2,220,000 dpm.