Digital BW, The Print

Ernst said:

It's usually a dye as far as I know and I wonder what it 
could become to do harm to good fibers.

-- 
Met vriendelijke groeten, Ernst


Wilhelm's tests are still accelerated aging tests.  Who knows what in  time will develop.  You are right in that it may never be harmful.

Mark MacKenzie
Art Conservator & Wet Plate Photographer
Alcalde, New Mexico

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