CGSB 4 2 NO 73 1-M91-CAN CGSB-1991 Textile Test Methods Wool - Determination of Percentage of Medullated Fibres by the Projection Microscope《羊毛纺织品试验方法 使用.pdf

1、C ANIC GSB -4.2 NO, 73.1-M91/ NATIONAL STANDARD OF CANADA IS0 2647:1973 Textile Test Methods Wool - Determination of Percentage of Medullated Fibres by the Projection Microscope Prepared by the International Organization for Standardization Reviewed by the Canadian General Standards Board Copyright

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19、ail - CGSB, Sales Unit Ottawa, Canada KIA 1G6 in Person - Place du Portage III, 9Cl 11 Laurier Street Hull, Quebec Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CGSB CAN/CGSB-4-Z N0

20、.73.L-flqL XX = L874b50 0011883 3T7 NATIONAL STANDARD OF CANADA CAN/CGSB-4.2 NO. 73.1-M91/ IS0 2647:1973 TEXTILE TEST METHODS WOOL - DETERMINATION OF PERCENTAGE OF MEDULLATED FIBRES BY THE PROJECTION MICROSCOPE Prepared by the International Organization for Standardization - - Reviewed by the Canadi

21、an General Standards Board ss Standards Council of Canada Approved by the Published June 1991 by the Canadian General Standards Board Ottawa, Canada K1A 1G6 Minister of Supply and Services Canada - 1991 No part of this publication may be reproduced in any form without the pnor permission of the publ

22、isher. Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CGSB CAN/CGSB-4.2 N0.73-L-fl9L tt 18746.50 0011884 233 CANADIAN GENERAL STANDARDS BOARD COMMITTEE ON TEXTILE TEST METHODS (Membe

23、rship at date of approval) Crown, Dr. E.M. Chairperson Biron, C. Clarke, Mrs. N. Cosman, Ms. V. Demers, A. Dolhan, Mrs. P. Duhamel, Ms. D. Edwards, D.S. Farnworth, Dr. B. Graham, M. Grgoire, Miss M. Hurley, Ms. M. Kasem, DI: M.A. King, Dr. M. Klimes, A. Mitton, Miss M.T. Monk, W.B. Mortimer, R.A. Mu

24、niak, Ms. E. Patel, A. Rashid, M.A. Ronsyn, Dr. C. Routhier, D. Scrafton, Ms. K. Randall, Mrs. J. Secretary University of Alberta Celanese Canada Inc. Du Pont Canada Inc. Department of Consumer and Corporate Affairs Professional Association of Cleaners and Launderers of Quebec Department of National

25、 Defence Textile Technology Centre Canadian Carpet Institute Mustang Industries Inc. The Wool Bureau of Canada Ltd. Dominion Fabrics Inc. Department of National Revenue (Customs and Excise) 4 Department of Consumer and Corporate Affairs University of Manitoba Dominion Textile Inc. Consultant Consult

26、ant ORTECH International The T. Eaton Company Canada Ltd. Sears Canada Inc. Department of Public Works, Alberta Department of Supply and Services Consoltex Inc. The Retail Research Foundation of Canada Canadian General Standards Board Acknowledgment is made for the French translation of this Nationa

27、i Standard of Canada by the Translation Bureau of the Department of the Secretary of State. C ANKGSB-4.2 NO. 73.1-M9l/ IS0 2647:1973 Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CG

28、SB CAN/CGSB-4-2 N0.73.1-Pl91 tt 1874650 0011885 17T Ottawa Canada KIA 1G6 National Standard of Canada TEXTILE TEST METHODS CANKGSB-4.2 NO. 73.1-M91/ IS0 2647:1973 Preface to the National Standard of Canada This National Standard of Canada has been prepared by the CGSB Committee on Textile Test Metho

29、ds. It is identical in content and in layout with the International Standard IS0 2647, Wool - Determination of percentage of medullated fibres by the projection microscope, published 1973-04-01 by the International Organization for Standardization (ISO). The international standard was reviewed by th

30、e CGSB committee to determine its suitability for Canadian use. It was agreed to use it in total, without editorial changes. Throughout this standard, the words “National Standard of Canada” are to be understood as replacing the words “International Standard” wherever they appear. The following Nati

31、onal Standard of Canada corresponds to the referenced IS0 standard: CANADA IS0 - CAN/CGSB-4.2 NO. 48-M/ISO 137 IS0 137 The testing and evaluation of a product against this method may require the use of materials and/or equipment that could be hazardous. This document does not purport to address all

32、the safety aspects associated with its use. Anyone using this method has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjunction with any existing applicable regulatory requirements prior to its use. The National Standards of

33、Canada may be obtained from the Canadian General Standards Board, Sales Unit, Ottawa, Canada K1A 1G6. Telephone (819) 956-0425 or 956-0426. Fax (819) 956-5644. The referenced International Standards may be obtained from the Standards Council of Canada, Standards Sales Branch, 350 Sparks Street, Suit

34、e 1200, Ottawa, Ontario K1P 6N7. Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-CGSB CAN/CGSB-4=2 N0.73=L-M9L tt m L87qb50 OOLLBBb OOb m INTERNATIONAL STANDARD IS0 2647-1973 (E) Wool

35、 - Determination of percentage of medullated fibres by the projection microscope O INTRODUCTION The method specified in this International Standard utilizes the same apparatus and technique as that described in ISOIR 137. Since the method of preparation and measurement gives a length-biassed sample,

36、 the result given by this method is an estimate of the length of medullated fibres as a percentage of the total length of all fibres. It cannot be used to estimate the volume of medullation or the fibre density. 1 SCOPE AND FIELD OF APPLICATION This International Standard specifies a method of test

37、for determining the percentage of medullated wool fibres by means of the projection microscope. The method is applicable to woollen and worsted products, at all stages, from raw materials to yarn. 5 ATMOSPHERE FOR CONDITIONING AND TESTING 5.1 A standard atmosphere is not necessary if only medullatio

38、n is measured. 5.2 If fibre diameter is also being measured, the sample must be conditioned and the slide prepared in one of the standard atmospheres for testing defined in IS0 139. 6 PREPARATION OF TEST SPECIMENS Sample the wool, prepare the specimens and mount them as directed in ISO/R 137. 7 PROC

39、EDURE 7.1 time as diameter measurement. The test may be carried out conveniently at the same 2 REFERENCES 7.2 The procedure is exactly the same as that described in ISOIR 137, Determination of wool fibre diameter- ISO/R 137, except that when the width of the fibre image is read off, it is also exami

40、ned for medullation at the point Projection microscope method. IS0 139, Textiles - Standard atmospheres for conditioning Of measurement. and resting. 3 PRINCIPLE 7.3 Fibre images that show any evidence of medulla at the point where the longitudinal line of the scale crosses it are recorded different

41、ly from those showing no medulla. This may be done, for example, by recording medullated fibres with a cToss (x, and non-mdullated fibres with a dot (., Magnified images of the profiles of short pieces of fibre are Droiected on a screen, and the number that are medullated is counted and expressed as

42、 a percentage of the total. 7.4 Images showing a medulla which does not cross the scale at the point of measurement are recorded as 4 APPARATUS non-medullated. Projection microscope, microtome, mounting media, etc. as specified in ISO/R 137. Diagrams showing the appearance of fibre images during mea

43、surement are provided in Figures 1 to 3. Noi, 73.1-M91 1 Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- CGSB CAN/CGSB-4*2 N0=73-L-M9L * W 1874650 0011887 T42 W IS0 2647-1973 (E) 8 C

44、ALCULATION AND EXPRESSION OF RESULTS Calculate the number of medullated fibre images as a percentage of the total number of images examined. The standard error SE of the percentage of medullated fibres is given by the formula : SE =IF (100 - m) where m is the percentage of medullated fibres; n is th

45、e total number of fibres examined. 9 TESTREPORT The test report shall include the following information a) reference to this International Standard; bl the total number of fibres examined; c) the results obtained; d) all operating conditions not specified in this International Standard as well as an

46、y incidents that may have influenced the results. FIGURE 1 - Nuran mdulli FIGURE 3 - No mdulla FIGURE 2 - Continiaisni.dulla Appearance of medulla at place of measurement 2 NO. 73.1-M91 A Copyright Canadian General Standards Board Provided by IHS under license with CGSBNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-