This report describes the results of a study comparing ASA speed, contrast index, and resolution from a developer time series. The time series was made on six levels each of PEO-400, -600, -1000, and -1500 added to DMAAC's "B" developer. Kodak's SO-277, low contrast, and SO-243, high contrast, aerial duplicating films were used. Results show that PEO-400, at a concentration of 30ml/l, can be a material help in getting higher speeds and contrast index from SO-277 aerial duplicating film without loss of resolution.
Library of Congress Subject Headings
Photography--Developing and developers
Department, Program, or Center
School of Photographic Arts and Sciences (CIAS)
McCullough, Harold, "The effects of polyethylene oxide on DMAAC's "B" type developer" (1979). Thesis. Rochester Institute of Technology. Accessed from
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