Hi Sanjay-
     
     Commercial grades of nitrogen have data sheets which lists the types 
     and amounts of contaminates - water is included in that list. The more 
     water you have in your nitrogen, the more water the plastic parts can 
     absorb. The decision to use one grade of N2 over another grade will 
     depend on how long you intend to leave the parts in storage and how 
     moisture sensitive the parts will be. The same decision goes for 
     buying or generating your own nitrogen - your usage rate will dictate 
     which option is cheaper. Good Luck.
     
     
     Dave Hillman
     Rockwell Collins
     [log in to unmask]
     


______________________________ Reply Separator _________________________________
Subject: GEN: Nitrogen quality for storage cabinets...
Author:  [log in to unmask] at ccmgw1
Date:    12/16/96 12:19 PM


     
Dear Technetters:
     
This is a question directed to people who use 
storage cabinets hooked up to a nitrogen source 
to store moisture sensitive devices (or even 
boards).
     
1. I would like to know if any grade of Nitrogen
    (in purity) is ok for the above purpose.  I am 
    not actually sure about the different grades of 
    nitrogen, but I am guessing that the cheapest 
    one would be ok too.  Is that correct?
     
2. Also, I would like to know, in your experience,
    which is cheaper - buying nitrogen or investing 
    in nitrogen generator for the above purpose.
    I am sure that the usage and the quantity of
    nitrogen is the big factor in this, but still I would 
    like to get your opinion....
     
Thank you
     
________________________________________________ 
Sanjay Rajan
Harris RF Communications
1680 University Avenue   Phone:    (716) 242-3923 
Rochester, NY 14610 Fax: (716) 242-3174 
________________________________________________
     
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