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An interlaboratory comparison using three materials has been organised to assess the agreement among laboratories undertaking tests to characterise the emission of volatile organic compounds from indoor materials and products using small test chambers. The twenty participating laboratories showed the following main results. Chambers of different materials (glass and stainless steel) and of wideley different capacity (0.035 to 1475 l) appeared equally suitable. The repeatability of duplicate measurements (including sampling) within each laboratory was good. The test with a known n-dodecane source showed, for most laboratories, an unexpected and yet unexplained discrepancy. The interlaboratory agreement appeared reasonable (coefficient of variation 26-42 %) when testing a PVC tile, but for a wax the scatter was very high.

Additional information

Authors: DE BORTOLI M, JRC Ispra (IT);COLOMBO A, JRC Ispra (IT)
Bibliographic Reference: EUR 15054 EN (1993) 90 pp., free of charge
Availability: Available from Joint Research Centre, Publication Department, I-21020 Ispra (Va.) (IT)
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