ISO INTERNATIONAL STANDARD 16000-27 First edition 2014-06-01 Indoor air Part 27: Determination of settled fibrous dust on surfaces by SEM (scanning electron microscopy) (direct method) Airintérieur Partie 27:Détermination de la poussiere fibreuse déposée sur les surfaces par MEB (microscopie eélectronique a balayage) (meéthode directe) Reference number IS0 16000-27:2014(E) LSO @ IS0 2014 I without license from IHS Not for Resale IS0 16000-27:2014(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56:CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ IS0 2014 - All rights reserved No reproductic networking permited without license from IHS Not for Resale IS0 16000-27:2014(E) Contents Page Foreword ..iv Introduction. ...vi 1 Scope. 2 Normative references ..1. 3 Terms and definitions 4 Symbols and abbreviations .3 4.1 Symbols. .3 4.2 Abbreviations .4 5 Principle ..4 6 Apparatus and material ..4 6.1 Equipment and materials for adhesive tape sampling and preparation 6.2 Equipment and material for analysis. .5 7 Sampling. .5 7.1 Measurement planning. .5 7.2 Measurement objectives and sampling sites ..6 7.3 Number of samples .7 7.4 Requirements on the sampled surface ..8 7.5 Sampling procedure. .8 7.6 Sampling record. ..9 8 Analysis (SEM) .10 8.1 Adjustment of the SEM .10 8.2 Procedure ..10 8.3 Fibre classification by EDXA ..13 9 Calculation and presentation of results ..19 10 Record of analysis .20 11 Measurement uncertainty .20 11.1 General 20 11.2 Random sample related deviation 21 11.3 Deviations in analysis and weighting of the count results .21 11.4 Detectionlimit. .21 12 Applications and instructions for use .22 12.1 General .22 12.2 Sample requirements 22 12.3 Summary of the results for multiple individual samples .23 Annex A (informative) Example of SEM structure counting form ..24 Annex B (normative) Procedures for calibration and adjustment of the SEM .25 Annex C (informative) Random sample related deviation ..26 Annex D (informative) Example: using the method in an indoor environment ..30 Bibliography .32 iii se with IS ed without license from IHS Not for Resale