<< Also, I've acquired some small amber dropper bottles, the kind used by
pharmacists. They are not completely opaque, so I assume I shouldn't store
light sensitive solutions in them. Am I correct? >>
Amber bottles are used in laboratories for storing silver solutions so I
suspect these are ok. I've certainly used them for various alt-photo
solutions, although I tend to keep these in a cupboard (for other reasons)
when not in use.
Peter Marshall
On Fixing Shadows and elsewhere:
http://faraday.clas.virginia.edu/~ds8s/
Family Pictures, German Indications, London demonstrations &
The Buildings of London etc: http://www.spelthorne.ac.uk/pm/