Homebrew_PCBs

On Mon, Apr 1, 2013 at 11:09 AM, chuck richards <chuckrr@...>
wrote:

> If you get it on your skin, get it off quickly. You will feel a slippery
> feeling between your fingers. Wash that off using lots of tap water,
> because if you forget and leave it on there, it turns your skin into a
> pasty goo that comes off!

I like to have a cheap pump bottle of white vinegar (any vinegar will do,
actually) handy to spray on my hands or anything that gets the hydroxide
solution on it. It neutralizes the alkalinity and converts it into an
easily-washed-off salt. In the darkroom, I used to just stick my hands in
the stop bath (acetic acid about the same dilution as vinegar) to get that
slimy alkaline feeling of the high-pH developer--some of which used sodium
hydroxide. That's why it's called stop bath. Photo-developing agents work
only in an alkaline environment, and the stop bath puts an immediate to
that.

Damn! Now I have the urge to do some (real, as in film) photography again!

73,

Todd
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