With the dichromate bleach, I mix it with the exhausted developer prior to any 
disposal; this converts it from the hexavalent chromium(VI) ion, which is very 
water soluble and highly toxic, to the trivalent chromium(III) ion which is 
insoluble and while toxic, is much less harmful. The alkalinity of the 
developer also neutralizes the acid and I use a pH strip to confirm.


On Aug 31, 2016, at 6:26 AM, Scott Dorsey <klu...@panix.com> wrote:

>> Sounds like the most problematic chemicals are in bleach, fix, and hypoclear.
> No, no, hypo clear is fine.  It's just sulfite.  It's the hypo itself that
> picks up the silver.
> --scott
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