Cosa Instrument Corp., Norwood, NJ, has entered into an exclusive deal with Scinco Co. LTD of Seoul, Korea, for the sole distribution, technical support, and service of its PDA UV-Vis spectrophotometers in the U.S. Because they use reversed optical technology, the Cosa Scinco PDA S-3100 and S-4100 do not have a problem with stray light. They also have a new way of doing analysis based on software that allows users to enter support equations for the evaluation of data. In addition, they comply with 21 CFR Part 11 protocols.