What is the difference between silver & vesicular microfilm?
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- What is the difference between silver & vesicular microfilm?
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Silver - is a 4 mil polyester base film treated with silver gelatin to conform to ANSI/NAPM standard IT 9.1 and ANSI/AIIM MS14. Vesicular - is on 3.6mil polyester base film and conforms to ANSI/NAPM standard IT 9.12
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