ISO 7686:2005

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ISO 7686:2005 specifies a method for the determination of the opacity of plastics pipes and fittings.

ISO 7686:2005 is an international standard that specifies a method for determining the opacity of plastic pipes and fittings, meaning it outlines a standardized procedure to measure how much light can pass through a plastic pipe or fitting, essentially indicating how opaque it is; published in 2005 by the International Organization for Standardization (ISO).