For me, the short answer is don't! I'm sure the subject has been touched 
upon many times already. As Mike says, all you are doing is diluting the 
active components in the alcohol and letting them dry on again exactly 
in the places where you want them least.

However, I disagree with Mike on one point and that is that RMA flux did 
have to be cleaned off with specific solvents according to the 28 809 
standards for military purposes. It was not permitted to use it as a no 
clean flux. That having been said, many people did use it as a no clean 
flux for non-military applications, with varying degrees of success. 
Despite what many people think, these fluxes did contain halide 
activators, although the quantity was limited.

In my opinion, if you need the utmost in reliability, you should do a 
proper clean with RMA fluxes or use a suitably qualified no clean flux, 
which will give you the reliability that you desire.

Brian

On 16/02/2011 17:17, Phillip Bavaro wrote:
> What happens when the RMA liquid flux used to hand solder thru hole components
> is cleaned using an IPA bath and a brush?  Most comnponents come out bright and
> shiny but happens underneath the bodies?  Ionic testing doesn't pick up
> anything.  Thanks in advance.
>
> Phil
>
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