cyanotype soln. gone bad

Greetings,

This evening I got out my bottle of cyanotype (Ware's new cyano) solution to coat and test some different papers. Much to my surprise my solution was deep green. I filtered it again and found there was also some dark blue sludge in the bottle.

The solution is only 2-3 months old, has been in a brown bottle with black lid tightly screwed on and kept inside a dark drawer that is only opened when I get out the bottle for a printing session. It was O.K. a few weeks ago (pale yellowish gree), so I am wondering if the higher humidity around here has adversely affected the solution over time - when it has been opened to take out a few mls of the stock for use. I use a dedicated syringe (which I wash and dry after each use) to draw from the stock bottle. After removing what I need for a session I do put the stock bottle back in the dark drawer. Is it restorable or must I just start "from scratch" again? Any clues as to what I might do to prevent this happening again; if it is the humidity I do have "dehumidifier" on my list of items to purchase, though I wouldn't want to run it all the time! Maybe some of the "crystal stuff" in the drawer?

Thanks!
Judy

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Judy Rowe Taylor
Mukilteo, WA
Art is a voice of the heart, a song of the soul.
www.enduringibis.com
jude.taylor@comcast.net or judyrowetaylor@enduringibis.com