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ANSI/I3A IT4.156-2002

ANSI/I3A IT4.156-2002

Photography (Chemicals) - Sodium Formaldehyde Bisulfite, Anhydrous (revision and redesignation of ANSI/NAPM IT4.156-1986 (R1995)) International Imaging Industry Association / 05-Sep-2002 / 18 pages

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Establishes criteria for the purity of photographic-grade anhydrous sodium formaldehyde bisulfite and describes the tests to be used to determine the purity.



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