Le dernier examen de cette norme date de 2022.
Cette édition reste donc d’actualité.
Résumé
PrévisualiserThe principle of the method specified is isokinetically withdrawing a known volume from a moving gas stream, passing the sampled gas through a filter medium to remove particulate matter (including fibres), treating the filter to make it transparent when viewed under a microscope and counting the number of fibres in a precise number of fields viewed using a phase-contrast optical microscope. The method may be used to determine fibre concentrations in flowing gas streams in ducts, chimneys, or flues from a wide range of industrial processes.
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État actuel: PubliéeDate de publication: 1993-08
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Edition: 1Nombre de pages: 21
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- ICS :
- 13.040.40 Émissions de sources fixes
Acheter cette norme
fr
| Format | Langue | |
|---|---|---|
| std 1 124 | ||
| std 2 124 | Papier |
- CHF124
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