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
>> 
>