Homebrew PCBs

Oh, then let me put it that way:
I just decided i do not really need sulphuric acid and H2O2 etching ;-).

However i plan to get a good scale (can't find a hydrometer) and some tools
for measuring the ph for the HCl H2O2.

Any good ideas how to make a working hydrometer?
(Or sorces for buying one in the needed range in europe? (oh yes, cheap 
please)
i also have no good scale and want
one for some time now, but they are so expensive. i try to get a used
lab scale at ebay... if i can use a hydrometer in the meantime this would 
be nice.

> Also a note - I found a better - cheaper source for H202, 27% 1 us 
> Gallon,
> 3.3err someodd liters. for $13.00, From Pool and hot tub supply store
> "Lighthouse pools and spas" , It's commonly called Shock in that 
> industry,
> and every moderate town probably has a pool /hot tub shop   - It's 
> cheaper
> that the wood bleach by volume, and works just as well.
>
> JT
>

well, i will stick with my chemicals shop... the 35% was some ??? 4 eur or 
so for 1l.
(i do not know what he charges for the bottle, it is included, but you can 
have it refilled.)
He had the pool stuff too, i forgot the name, but it is lower 
concentration and was not cheaper.

Find such a shop and you will never go for wood bleach again... Or visit 
Vienna in the
holidays and go shopping ;-) (i have no idea what the customs people will 
do to you ;-) )


ST