RE: Modifying bleaches

From: Kate M ^lt;[email protected]>
Date: 12/01/04-02:15:39 PM Z
Message-id: <000b01c4d7e2$872005a0$3f26f6d2@kateiwpiarptn6>

Ferricyanide itself is not that dangerous in ordinary darkroom use. I
would not shine UV light or strong visible light to it though.
I know it produces cyanide gas when this happens, but how serious a
problem is it, if you're exposing cyanotypes under u.v. lights? What
precautions should you take, apart from ensuring good ventilation?


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