Homebrew PCBs

I have about 2 gallons of the stuff that's been stored in the dark for about 10 years. Wondering if it's still good? By dark I mean in a closed cabinet inside the hazmat shipping box.

Thanks Mark
http://www.ka6wke.net

On 18/11/2012 18:07, mark@... wrote:
> I have about 2 gallons of the stuff that's been stored in the dark for
> about 10 years. Wondering if it's still good? By dark I mean in a closed
> cabinet inside the hazmat shipping box.

It should be OK.

Leon
-- 
Leon Heller
G1HSM

The only way you will really know is to just try it out and see. If it doesn't work, get some more. If it does, great!

--- In Homebrew_PCBs@yahoogroups.com, Leon Heller <leon355@...> wrote:

>
> On 18/11/2012 18:07, mark@... wrote:
> > I have about 2 gallons of the stuff that's been stored in the dark for
> > about 10 years. Wondering if it's still good? By dark I mean in a closed
> > cabinet inside the hazmat shipping box.
> 
> It should be OK.
> 
> Leon
> -- 
> Leon Heller
> G1HSM
>

On 19/11/12 05:07, mark@... wrote:
> I have about 2 gallons of the stuff that's been stored in the dark for about
> 10 years. Wondering if it's still good? By dark I mean in a closed cabinet
> inside the hazmat shipping box.

It will be ok, except some solids may have settled out making it less potent.

The way to fix that (as i did with mine) is shake the bottle well and make sure 
all solids are dispersed.

Then when you put some into an etching tank, add some HCl acid and it will 
properly disolve any solids. You coud add the acid to the bulk container too.

Add more acid every few months, and keep the tank covered when not in use.
Stray HCl fumes corrodes metals near the tank.

I have some that's 30 years old and still works.