Abstract
Specification of a visual method of determining the number of impurities and foreign particles in polyvinylchloride resin. About 200 g of resin are flattened between a rigid white plate and a glass sheet containing a grid. The impurities and foreign particles visible in 25 squares (= 225 cm ) and having a diameter equal or greater than 0,250 mm are counted. Expression of the result by extrapolation as the number of specks per 100 squares of the grid.
General information
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Status: WithdrawnPublication date: 1979-07Stage: Withdrawal of International Standard [95.99]
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Edition: 1Number of pages: 3
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Technical Committee :ISO/TC 61/SC 9ICS :83.080.20
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Life cycle
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Now
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Revised by
PublishedISO 1265:2007
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