GP 432

50 g  Potassium Bromide
1.5 g  Boric Acid
2 g  p-Benzoquinone added just before use.
One litre water

Bleaching time: One and a half times the time it takes to clear.

Temperature:  20C              Agitation:  Intermittent

Shelf life:  Not long with the PBQ added.

This bleach never seemed to work for me, on Agfa Holotest 8E75HD.  But it works quite well on Agfa Holotest 8E56HD. Go figure.

Source:  N. J. Phillips, A. A. Ward, R. Cullen, D. Porter, "Advances in Holographic Bleaches," Photographic Science and Engineering 24, 120 (1980).

Also Agfa Gevaert Technical Information Bulletin 21.7271(480).