Specifies a test method for determinig the number of insoluble and visible particles including all impurties and foreign particles in cellulose acetate. A test portion is dissolved in a mixture of dichloromethane, methanol and dimethylphthalate. Counting of all visible particles with a diameter greater than 0,15 mm in a square area with a side length of 25 mm.
Status: PublishedPublication date: 1990-09
Edition: 2Number of pages: 3
Technical Committee: ISO/TC 61/SC 9 Thermoplastic materials
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