For the purposes of this Part, activity is expressed in the special unit of curies (Ci) or in the SI unit of becquerels (Bq), or their multiples, or disintegrations (transformations) per unit of time.
= 3.7 x 1010 becquerels
= 2.22 x 1012 disintegrations per minute.
N.Y. Comp. Codes R. & Regs. Tit. 6 §§ 380-2.2