Wratten

Description: Louisa Augusta Alberta (WRATTEN) WHITE (1849 - 1921). Mrs. White was the wife of Josiah John WHITE and the sister of Jason and Frederick WRATTEN. "Frederick WRATTEN founded one of the first photographic supply businesses, Wratten and Wainwright in 1878. Wratten and Wainwright manufactured and sold colodion glass plates and gelatin dry plates. In 1878 Wratten invented the 'noodling process' of silver-bromide gelatin emulsions before washing. In 1906 Wratten with the assistance of Dr. C.E. Kenneth Mees (E.C.K. Mees) invented and produced the first panchromatic plates in England. Wratten is best known for the photographic filters that he invented and are still named after him - Wratten Filters. Eastman Kodak purchased his company in 1912."

(Bron)