"Via"

[lmn]

But how well will it work to develop negatives?

http://tinyurl.com/d9e4ue

 

[BobNewYork]

Perhaps not your negs - but I bet it'll tone your prints; AND keep you awake for an all night printing session!!

 

[Toffle]

I see no reason that it won't work as a developing agent, but it would probably end up as the most expensive bit of darkroom chemistry you've ever used.