> Personally I've switched to H-o5-S , I had to use Lab grade 50%How is the process, what do you need to measure to keep things going?
> H202which I
> purchased a 4L bottle from Post-apple scientific co.
> http://www.postapplescientific.com/ I drove to PA to pick it up , cause
> Freight shipping for 1 4L bottle was $100, the juice itself much
> cheaper. I
> switched to acid tin plated etch resist. And Peroxy Sulfuric wont eat
> thru
> the tin, like CUCl2 will. + I can reclaim the etched copper and reuse it
> in
> my copper plating bath for thru holes, and no more chlorine smell.
>
> JT.
>
If there are any advantages (like no clorine) i may switch over when the
HCl
bottle is finally empty (but that could take another few years at that
rate...)
ST