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This is the way we wash our hands
Testing dye fastness with Launderometer
A Zeiss Pulfrich photometer
Judging dyed skeins
Wash day at the dyes laboratory
Checking dye shades
Testing laundered fabrics
Dye testing equipment
Analytical and dye testing section in the Technical Laboratory at Deepwater Point, New Jersey
Chemist inking the press
Testing dyes for fastness
Testing dyes on lithographer's stone
Testing pigmented plastic
Working model of Multi Lap machine for application of vat dyes
Spray tester for testing water repellency
Plastics coloration studies