[Elecraft] Cleaning capacitor goop from PC board

Jack Smith jack.smith at cliftonlaboratories.com
Sun Dec 26 11:49:22 EST 2010


I buy 90% isopropyl alcohol at Wal*Mart and use it for PCB cleaning. I 
think it's a couple dollars for a quart bottle, available in the drug 
section. I've also found 90% at most drug stores or supermarkets if you 
look carefully.

It's a lot cheaper than Everclear, but you can't consume the excess!

Jack K8ZOA

On 12/26/2010 11:06 AM, Gary K9GS wrote:
[edited to remove non-pertinent parts]
>
> 2)  Once you have most of the goop cleaned off, I recommend using
> alcohol to remove any remaining residue.  You can use store bought
> Isopropyl alcohol but the problem is that the stuff you buy in a store
> is only 70%...with the remaining 30% being water.  A much better thing
> to use is to buy some Ethyl alcohol.  Go to your local liquor store and
> buy a pint of grain alcohol.  Brand name around here is "Everclear".
> This is 95% Ethyl alcohol...about as high as you can get outside of a
> chemistry lab.  Alcohol is naturally hygroscopic (absorbs water) so
> you'll never get 100%.
>


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