Good afternoon all.  I hesitate to ask this on a Friday afternoon, but 
here goes.

Back in April, we had a Technet conversation about hand sanitizers and 
possible effects on electronic assemblies.  I just re-read the thread from 
the archives.  There was a lot of speculation about the effectiveness of 
these items from a bacteriological perspective, some about the chemicals 
from Karen Tellefsen, but nothing really related specifically to known 
failure mechanisms of these materials or studies that have been done.

I was not as concerned about this until I started looking harder in our 
facility.  I have found that there are several hand sanitizers here with 
dyes and fragrances.  Germ-X makes a green hand sanitizer with apple 
fragrance, called Gnarly Green Apple.  I would love to spec that material 
in here purely for the reason that it would be the first known use of 
"gnarly" in a Rockwell spec.  I wonder if the dyes are an issue or the 
fragrances (usually oils).

I was just in a meeting discussing this with a number of leaders in 
various manufacturing areas.  We also have concerns about hand lotions 
coming into the facilities in ladies purses and being used because they 
don't like the smell of the approved ones we have from Chemtronics or 
Techspray. 

We have the big safety net in our facility of a saponified aqueous water 
wash process just prior to conformal coating, and everything handled with 
gloves thereafter, but the intermediate steps where we might have 
solderability issues or residues that might cause a high voltage power 
supply to fail in ICT, have me wondering.

So, I ask the question if anyone in the Technet community knows of any 
scientific study examining the transfer of hand sanitizer chemicals, or 
hand lotion chemicals, to an electronic assembly and / or the detrimental 
effects of such residues.  I can't believe that I am the first to ask the 
question and am wondering if someone else has already done an analysis so 
I don't have to re-invent the wheel.

Doug Pauls
Rockwell Collins

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