Homebrew PCBs

At 1:34 am ((PST)), Sun Jan 28, 2007 Lez wrote:

>But thats all drifting off topic isn't it, how it smells is irrelevant when
>its the wrong stuff.........

Safety requirements make it pretty likely that either
the small print on the label, or an MSDS, will disclose
the major constituents. OTOH it's unlikely that any
additive in a cheap acid cleaner will inhibit its etching
action - though I suppose it's just possible there might
be some other subtle side effect.

[There was a drain cleaner with an organic solvent but:
a) it wasn't acidic in nature;
b) it was withdrawn from the market because
  1. it tended to dissolve plastic waste pipes, and
  2. it polluted waste water.]

>The search behind the topic was...
>
>If I walk into XYZ uk-store, which product does one buy, and so far, no one,
>can name a store that sells an item that i susable, its all generic answers,
>drain cleaner, brick cleaner, so you wont be guaranteed to get the right
>stuff.

Perhaps because everything except the name of the store
had already been answered before you asked.

>Whats needed is a simple ''XYZ store sells ABC product,
>it says SKU#99999 on the side of it, thats what you want''
>
>Seems everyone in the UK buys fecl from maplins........

If they want to use such a crap etchant,
I can't think of a more appropriate supplier ;-)

...and it serves them right if they are too ignorant to
acidulate with extra HCl - may they drown in slime :-)

However, to answer the question...

Meera Pharmacy, 4 Beech Road,
St Albans (01727) 851132,
ask for Dina - say Len sent you.

Other details already given in message 17491
on Jan 21, 2007 in thread: H2O2 in the UK.
[ Where "someone" = "Lez Briddon" ]

HTH - was that specific enough for you?

I have bought 9% (30vol) H2O2 from a pharmacy in
Bedford - sorry, its name forgotten - and, in the very
distant past, 500ml bottles of 3% (10vol) from Boots.

[My previous bottle of HCl, IIRC as 'Spirits of Salts", was
from hardware store Dearman Gomms, in St Albans.]

Now, if my local pharmacist can get these things,
then any independent pharmacist ought to be able to.

I don't know if that applies to supermarket pharmacies too:
it seems to me they _should_ be able to but I suspect
there is less chance of finding shelf stock and more that
they CBA or are PC-crippled. [I noticed a news item about
a supermarket refusing to sell an alcoholic beverage to an
aged ex-mayor of York without proof he was over 18;
the management defended their staff training. :-)) ]

It may be that you stand more chance of getting chemical
supplies at a pharmacy where you are well known. For
example, the one that supplies your medication - unless
that in itself disqualifies you ;-)


Regards, LenW