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Reply To: | TechNet E-Mail Forum. |
Date: | Tue, 1 Dec 1998 20:48:11 -0500 |
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Hello Poh:
> Is there any way to monitor the flux activity level, as to check whether
> the flux has been degraded over time, using the foam fluxer ?
>
There is a formula I copied from a book once that determines the fluxing
power of the rosin a.k.a. its "acid value" through neutralization/titration
techniques. I did not get to use it though because *simple monitoring of flux
specific gravity* works good enough for us.
mg of KOH to neutralize a rosin sol'n in alcohol
ACID VALUE =
-------------------------------------------------------------------------
gram of dissolved rosin
An acid value of 160-180 is considered adequate for a good rosin.
Lei Tumibay
Lead Finish Group - Assembly Engineering
Analog Devices - General Trias
Cavite, Philippines
E-mail: [log in to unmask]
http://www.analog.com
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