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September 2013

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Subject:
From:
"Watson, Howard A" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Watson, Howard A
Date:
Fri, 13 Sep 2013 18:51:42 +0000
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Thanks to everyone for their advice. I wonder if most of you are not users of nPB. Well, I am hopeful that we'll find a good alternative and stop using this nasty stuff.

Thanks,

Howard A. Watson


-----Original Message-----
From: Goodyear, Patrick [mailto:[log in to unmask]] 
Sent: Thursday, September 12, 2013 4:07 PM
To: 'TechNet E-Mail Forum'; Watson, Howard A
Subject: RE: nPB alternative for cleaning

Howard, 

We use alcohol either Ethyl (200 proof, preferred) or Ethyl/IPA (200 proof, denatured) doesn't clean as aggressively as pure 200 proof,  IPA can also be used but it will craze some plastics.    You have to pay state (CA at least), and federal taxes on the grain alcohol and a  well ventilated room or else you shouldn't drive for a bit.    

Pat Goodyear 
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Watson, Howard A
Sent: Wednesday, September 11, 2013 10:27 AM
To: [log in to unmask]
Subject: [TN] nPB alternative for cleaning

Technetters,

In January, Brian Ellis raised some excellent points about the hazards of using nPB, or 1-Bromopropane. With the release of the OSHA/NIOSH Hazard Alert on nPB July 31, 2013, the pressure is on to stop using this stuff. We use the trade name Ensolv. While we slowly convert to aqueous batch cleaning, our need for spot cleaning on the bench will remain, as we are more like an R&D shop. We are using rosin core solder and RMA flux applied topically. The techs love Ensolv, and it does work great. Does anyone have a recommendation for a replacement of Ensolv? I have seen the specs of 3M Novec engineered fluid, maybe 71DA is a good choice?

Thanks in advance for your advice.

Howard A. Watson



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