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Interior air of road vehicles — Part 12: Test methods for the determination of fogging characteristics of trim materials made from polyvinyl chloride (PVC) or polyurethane in the interior of automobiles
This document specifies test methods which are intended to determine the fogging characteristics of polyvinyl chloride (PVC) or polyurethane textiles that are used as trim materials in the interior of motor vehicles.
The methods can also be applied to fluid, paste, powdered or solid raw materials which are the basis for such trim materials or from which the materials are manufactured. The methods can also be applied to other materials and finished products.
The procedures are applicable to the measurement of fog condensate on glass surfaces within the limits of the test conditions. These tests do not or cannot measure accurately those cases in which:
— the surface tension of the condensate is low, resulting in early coalescing into a thin transparent film;
— the condensate is present in such a large quantity that the droplets coalesce and form a heavy oily/clear film (this heavy film gives false readings).
NOTE In such cases, the gravimetric method is used.
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