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1、CENEN*L20923404589003LOb9362=EUROPEANSTANDARDEN120:1992NORME--`,,,`,,-`-`,,`,,`,`,,`---EUROPÉENNEEUROPÄISCHENORMJuly1992SupersedesEN120:1984UDC674.815:620.1:543.242.3:547.2811Descriptors:Woodenboards,parti'clebbards,fibreboards,plywood,chemicalanalysis,determinationofcontent
2、,gxtractionmethods,perforatorsEnglishversionWoodbasedpanels-Determinationofformaldehydecontent-Extraction.methodcalledtheperforatormethodPanneauxàbasedebois-DéterminationdelaHolzwerkstoffe-Bestimmungdesteneurenformaldéhyde-Méthoded'extractionFormaldehydgehalts-Extraùtionsverf
3、ahrenditedthcdeauperforateurgenanntPerforatorrnethodeThisEuropeanStandardwasapprovedbyCENon1992-07-01.CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEuropeanStandardthestatusofanationalstandardwithoutanyalteration.Up-to-
4、datelistsandbibliographicalreferencesconcerningsuchnationalstandardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember.TheEuropeanStandardsexistinthreeofficialversions(English,French,German).AversioninanyotherlanguagemadebytranslationundertheresponsibilityofaCE
5、NmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusastheofficialversions.CENmembersarethenationalstandardsbodiesofAustria,Belgium,Denmark,Finiad,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,Switzerland
6、andUnitedKingdm.CENEuropeanCornnitteeforStandardizationComitéEuropéendeNormalisationEuropäischesKaniteefürNomngCentralSecretariat:ruedeSlassart,3ó8-1050Emsselso1992CopyrightreservedtoCENmembersRef.No.EN120:1992ECopyrightEuropeanCommitteeforStandardizationProvidedbyIHSunderlic
7、ensewithCENNoreproductionornetworkingpermittedwithoutlicensefromIHSNotforResale-~CENENJL2092=3404589003L070U84MPage2EN120:1992IContentslistPagescope.....................................4Normativereferences......................4Principle.................................4Reage
8、nts..................................4-Apparatus:...................
