Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

seems to work fine already?

i guess if you let open the lid from now on and start bubbling when gets brown all may get fine without
H2O2. but it may also be a good idea to measure the acid level (not ending up with 80% acid which you have
to dilute, and not haveing to little acid in it)..

The H2O2 maybe is cheaper if you buy 30% stuff..
I will immediately ask a friend who has conections to some haircutting people...
The H2O2 was used to brighten hair, don't know if also used now.
I will ash for the price and concentration, maybe if it is ok you may also get it at your site...


I was told H2O2 is a bit volatile so keeping bigger amounts in bottles is not very good.. don't know if
true...


regards

st