Micro #32

Micro #32-1 (hydroquinone).
Micro #32-2 (hydroquinone).
Micro #32-3 (hydroquinone).
Micro #32-4 (hydroquinone).
Micro #32-5 (boric acid).
Micro #32-6 (chromium chloride and potassium rhodanide).
Micro #32-7 (chromium chloride and potassium rhodanide).
Micro #32-8 (chromium chloride and potassium rhodanide).