I forgot to mention an other existing book, not so funny to read, but worth
every penny: " Contamination of Electronic Assemblies" by Michael Pecht et
al. I'll send the table of content to any of you with interest in the
matter. Could mail the table to Steve, but I think his days are jammed just
now.
Inge
----- Original Message -----
From: "Inge" <[log in to unmask]>
To: "TechNet E-Mail Forum" <[log in to unmask]>; "Brian Ellis"
<[log in to unmask]>
Sent: Friday, August 21, 2009 7:10 PM
Subject: Re: [TN] Contamination by Hand Sanitizers & Lotions
>I have your book. Great stuff. I like the odd language with very personal
>expressions and humoristic formulations. Indeed a personal work, good
>entertainment besides the massive content of facts. I recommend the book.
>Every process engineer ought to have it on the desk. If you can get it.....
> Inge
>
>
> ----- Original Message -----
> From: "Brian Ellis" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Friday, August 21, 2009 8:17 AM
> Subject: Re: [TN] Contamination by Hand Sanitizers & Lotions
>
>
>> Apart from the thread on this subject here a month or two back, the only
>> mention in literature that I know of is in my book, which discusses in a
>> diagrammatic form not only the effect of lotions before and after
>> soldering. Sanitisers didn't exist in those days, but their effect is
>> similar to lotions, although their oily components are lower.
>>
>> As an addendum to my post in the earlier thread, I was back in hospital
>> for another operation last week and found that they had placed
>> squirt-bottles of sanitisers every 5 m along all the corridors,
>> presumably as an anti-H1N1 measure. This allowed me to have better access
>> to the stuff and I found that the hand was persistently contaminated. I
>> was able to repeat my mirror test 2 or 3 hours after deliberately using
>> the sanitiser correctly, being careful not to handle anything in the
>> meanwhile. As one of the components is a high molecular weight
>> polymerised glycol, it is a reasonable assumption that this is the
>> persistent substance. As it is hygroscopic, it is also a reasonable
>> assumption that it's not going to improve sensitive electronics if
>> transferred from the hand to an assembly. If such transfer occurs before
>> soldering, then the heat may cause further polymerisation, rendering the
>> hygroscopic residues more difficult, maybe impossible, to remove.
>>
>> Brian
>>
>> Diljit Matharu wrote:
>>> Can someone direct me to resources which talk about PCBAs contamination
>>> by the use of hand sanitizers & lotions.
>>>
>>>
>>>
>>> Thanks,
>>>
>>>
>>>
>>> Diljit S. Matharu
>>> Quality Leader - B C
>>> Creation Technologies
>>>
>>> Office: 604.430.4336 x 3395 | Mobile: 778.240.8144
>>> 8977 Fraserton Court | Burnaby, BC, Canada | V5J 5G1
>>> [log in to unmask]<mailto:[log in to unmask]>
>>> | www.creationtech.com<http://www.creationtech.com/>
>>>
>>> [cid:[log in to unmask]]Working together to build the future
>>>
>>>
>>>
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