Dougleas, I believe I found it: J. D. Sinclair - “Deposition of Airborne Sulfate , Nitrate , and Chloride Salts as It Relates to Corrosion of Electronics,” vol. 137, no. 4, pp. 1200-1206, 1990. Good luck! David A. Douthit > On Jun 15, 2018, at 12:31 PM, David Douthit <[log in to unmask]> wrote: > > Douglas, > > I am searching my records for some AT&T/BELL labs testing to simulate “dirty air/condensation”. These experiments determined that condensation would begin on average at 60% Rh and a film would form with a Ph factor between 2 and 4! I think this is called corrosion! > > If I find those methods (done in the 80’s) I will forward you the references! > > David A. Douthit > > >> On Jun 15, 2018, at 7:14 AM, Douglas Pauls <[log in to unmask]> wrote: >> >> Good morning all, >> >> I am about to turn one of my co-ops loose on a project. Years back, I >> recall a test method, I think from a Mil-STD, that involved exposing a >> circuit to "branch water". This was water with some form of electrolyte in >> it to represent condensed water from a dirty atmosphere. Is anyone >> familiar with the test method I am thinking of? Or something similar? >> >> >> Doug Pauls >> Principal Materials and Process Engineer >> Rockwell Collins >> >