!%PerkinElmer Inc.%! offers an online radiochemical tool kit to support researchers’ laboratory requirements. The resource includes a universal radioactive decay calculator, a liquid scintillation counting cocktails and vial selector, a discussion forum and fresh lot schedules to facilitate planning experiments. It provides access to certificates of analysis that include technical data such as stability and storage, and a reagents cross-reference tool that helps customers determine the PerkinElmer equivalent to other reagents currently available on the market.