We study the effect of the hypersensitization with sodium sulphite in Agfa-
Gevaert 8E75HD holographic plates in reflection holograms. An enhancement o
f energetic sensitivity and diffraction efficiency is observed with low sol
vent effects when Agfa-Gevaert 8E75HD are pre-processed. A 2-5 limes increa
se of the sensitivity, together with temporal stability, is observed in ref
lection holograms.