Unblinking Eye
                    The Matrices after Fixing and Drying
Fixed and dried

I. 10% hypo only
II.  10% hypo + 3m in sulphuric acid sol.
III. 20% hypo w/ sodium bisulphite
IV.  10% hypo +3m in 5% EDTA disodium

Prints II, III, and IV show a clear reduction in chromium stain.

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