Back in the 90's, John Sohn/Bell Labs presented a paper detailing the effects of specific organic acids on SIR. If anyone recalls that paper I would appreciate any further details that would enable me to locate a copy. Thanks Rich Kraszewski /PLEXUS ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________