Subject: Time:2:47 PM OFFICE MEMO None Date:03/01/95 I'm looking for a NuReg reference or other for MDA (Minimum detectable activity) Calculations for portable survey meters. If anyone know of any please post. Thanks in advance. Joe Kane Radiation Safety Office University of Pennsylvania Phone (215) 898-2107 Fax (215) 898-0140 email joe_kane@rsomacserver.rso.upenn.edu