Homebrew PCBs

So, you say i bought enough ammonia to make 20 to 100 liters of cleaning  
solution?
Well, i do hope i won't need that much!

I will go with 5% i think. I found all sorts of concentrations, 8-10%,  
under 3.5%, under 10%, ...

Is this the MSDS for the brand you use?

ST


On Wed, 26 Apr 2006 02:33:49 +0200, Steve <alienrelics@...> wrote:

> Wow... according to the MSDS, this one is only 1 to 5% ammonia, if I'm
>
> interpreting this correctly:
>
> http://www.mchem.com/test/Pacific%20Ammonia.pdf
>
>
> So you'd better water it down a lot more than that!
>
>
> 1 part 1 to 5% ammonia
>
> 4 parts 50% isopropyl
>
> 5 parts water
>
>
> So... do the math.
>
>
> It isn't incredibly critical, however if you use 1 part out of 10,
>
> that is still about as strong as my undiluted household ammonia.
>
>
> Steve Greenfield