Homebrew PCBs

ammonium perchlorate.

--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@g...> wrote:
> On Mon, 09 Aug 2004 16:53:25 -0000, Phil <phil1960us@y...> wrote:
> 
> > I totally agree that the best solution is an etch AND storage 
tank,
> > all in one.
> >
> > Unfortunately, m tank is plastic.  I (currently) use AP.  I have
> > heard anecdotal evidence that it eats plastic so I dont want to 
store
> > it in the tank.  I've kept my eye out for a glass tank but they 
are
> > all too big (4 L/1 G) and I want to only have 1 L of etchant for
> > safety sake.  I guess at some point I'll build a glass one if I 
dont
> > find a suitable container.
> 
> What's AP? Acrylic?
> I used to store the CuCl in a PP (poly-propylene) bottle.
> It did form odd crystals on the outside so i changed to a glass 
bottle  
> after a few years.
> But it didn't seem the bottle was damaged.
> My HCl is in a PE (poly-ethylene) bottle, and it also has crystals 
on the  
> outside.
> Also the plastic itself seems slightly damaged (after 5 years...).
> I put another cut-off bottle as a sleeve over it (to keep me from 
touching  
> the crystals
> and to prevent leakage should it fail), next time i buy HCl i 
definitely  
> don't have
> them refill this bottle and get a new one instead.
> 
> I would not worry about a plastic tank for a few years, but who 
knows...
> I have a plastic lid (printers use to be made of ABS) and a piece 
of  
> rubber is
> part of the clamp, both seems unaffected so far.
> 
> ST