Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Henry Liu <henryjliu@...> wrote:
>
> I haven't used this site but it looks cheap.  1 quart of 35% for $20
> or 1 gallon for $30:
> 
> http://www.dfwx.com/h2o2.htm?gclid=CNanheiu3poCFQEeDQodIH6CzQ
> 


I buy mine from the local 'health' food store for about that price.  It works well. I have no idea why they sell 35% H2O2.  I probably don't want to know.
  

As this link warns there are *lots* of scammers out there, and probably even more who wouldn't know  a weight/volume percentage from a volume/volume percent, molar percentage, percent normal, or any of the other things that a 'percent' solution might represent.


Fortunately, this is not a particularly twitchy application, and a range of concentrations can work.


-- Dave