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Precision Photometers
- 1912
Catalog entry for instruments designed for photometric analysis. Photometers can be used to measure the presence and concentration of organic and inorganic compounds in solution by determining the absorbance of specific…
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16 items
Saison-Farben
- Couleurs Mode
- Fashion Shades
- Undated
Sample book with dyeing instructions and 32 mounted fabric samples.
- Creator Of Work J.R. Geigy A.G.
- Subject Dyes and dyeing, Dyes and dyeing--Wool
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25 items
Naphtol AS on Rayon
- 1927
Sample book for Naphtol AS dyes, used for "embroidery purposes, for effects in silk, woollen and cotton clothes, for curtains, underwear made of artificial silk, etc." Contains dyeing instructions and 70 mounted dyed…