dryers

From: Lynda Hurley (Lockheed-Martin  Corporation)
To: RP-ML
Date: Friday, July 21, 1995
Subject: dryers
We use Ciba-Geigy's 5180 and 5149 in our lab, I'm assumming you are using 
one of these.

Unfortunately I cannot who sent the original question, but I assume 
someone is having problems with humidity.  We use Damp-Rid that we buy 
from K-Mart for about $3.00, refills about $2.00 which will fill the 
container about 3 times and this lasts for about 2 months.  This we use 
inside the chamber and in the PCA, and we have dessicant bags that we put 
inside the plastic bags that we put our completed parts in for shipping. 

Now, you have a solution for inside the chamber, PCA, and shipping, but 
what are you doing about humidity control when the part is out of the 
chamber or the PCA?  You need to control the humidity at all times after 
the part is complete or it will pick up moisture and change geometry and 
soften.

We have previously used de-humidifiers in our lab, but we have just had a new 
air-conditioning system installed that is now controlling our humidity level at 
at 40%.  

Good Luck and keep dry!

Lynda Hurley
Lockheed-Martin
Orlando, Florida 32835
Lynda_J_Hurley@ccmail.orl.mmc.com