Alistair

Following on from Brian's input, the purpose of this test standard is to
provide uniform and repeatable measurement results that may be compared from
site to site. It is intended to measure the robustness of the surface finish
under test, it is not intended to test your flux solderability. (It might be
used in this way, but that is not the intention) For that reason there are
now 3 standard fluxes:

SMNA
Actiec 2
Actiec 5

These are now actually explained in the latest standards releases.

Changing the test flux takes you outside the standard, so what would you
then be measuring?

Also, using some form of fume extraction is not as straightforward as you
might imagine. The measurement device is making minute force measurements
and any minor disturbance such as air flow and vibration will disturb your
tests.

The best solution I can give is to equip the operator with suitable
breathing apparatus.
--
Regards Graham Naisbitt

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On 28/1/05 8:57 am, "Alistair Murray" <[log in to unmask]> wrote:

> For health & safety requirements, I am seeking an alternative test flux
> to that prescribed for use in the solder testing of PCBs.
>
> This test flux comprises 25% colophony in alcohol.
>
> Colophony is classed as a Sensitizing Agent for Occupational Asthma.
>
> LEV is an option but I would prefer to use a safe flux of similar
> "activity".
>
>
>
> Does anyone know of a colophony-free flux of similar activity? I regret
> that I do not know the activity of the colophony flux (acid value?). Is
> there a way of comparing it with the activity of a synthetic flux?
>
>
>
> Many thanks in anticipation
>
>
>
>
>
> Alistair Murray
>
> Artetch Circuits Ltd
>
> UK
>
>
>
>
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