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.
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