BS EN 27213-1982 Method for sampling pulps for testing《试验用纸浆取样方法》.pdf

1、BRITISH STANDARD BS EN 27213:1994 ISO 7213:1981 Incorporating Amendment No. 1 Method for Sampling pulps for testing The European Standard EN 27213:1993 has the status of a BritishStandard UDC 676.16:620.113BSEN 27213:1994 This British Standard, having been prepared under the directionof the Paper St

2、andardsCommittee, was published under the authority ofthe Board of BSI and comes intoeffect on 30 July 1982 BSI 01-2000 The following BSI references relate to the work on this standard: Committee reference PAM/11 Draft for comment 80/65152 DC ISBN 0 580 12828 8 Cooperating organizations The Paper St

3、andards Committee, under whose direction this British Standard was prepared, consists of representatives from the following: British Paper and Board Industry Federation (PIF)* British Printing Industries Federation* Envelope Makers and Manufacturing Stationers Association* HM Customs and Excise Her

4、Majestys Stationery Office* Institute of Trading Standards Administration National Association of Paper Merchants National Economic Development Office Pira (The Research Association for the Paper and Board, Printing and Packaging Industries)* Royal Institute of Public Health and Hygiene The organiza

5、tions marked with an asterisk in the above list, together with the following, were directly represented on the Technical Committee entrusted with the preparation of this British Standard: British Fibreboard Packaging Association British Wood Pulp Association Chemical Industries Association Man-made

6、Fibres Producers Committee Ministry of Defence Paper Sack Development Association Ltd Post Office Society of British Printing Ink Manufacturers University of Manchester Institute of Science and Technology Amendments issued since publication Amd. No. Date of issue Comments 7809 February 1994 Indicate

7、d by a sideline in the marginBSEN 27213:1994 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 1 Scope and field of application 3 2 References 3 3 Definitions 3 4 Principle 3 5 Sample bales (or rolls) 3 6 Procedure 3 7 Sampling report 4 Table Nu

8、mber of sample bales (or rolls) to be taken 3 Publications referred to Inside back coverBSEN 27213:1994 ii BSI 01-2000 National foreword This British Standard has been prepared under the direction of the Paper Standards Committee, and is identical with ISO 7213:1981 “Pulps Sampling for testing” publ

9、ished by the International Organization for Standardization (ISO). In 1993 the European Committee for Standardization (CEN) accepted ISO7213:1981 as European Standard EN 27213:1993. As a consequence of implementing the European Standard this British Standard is renumbered as BSEN 27213:1994 and any

10、reference to BS 6269 should be read as a reference to BS EN 27213. Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a British Standard without deviation. Some terminology and certain conventions are not identical with those used in

11、British Standards; attention is especially drawn to the following. Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British St

12、andards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International Standard Corresponding British Standard BS 4747 Methods for determination of saleable mass, inlots, of pulp ISO 801-1:19

13、79 Part 1:1980 Pulp baled in sheet form (Identical) ISO 801-2:1979 Part 2:1980 Pulps (such as flash-dried) baled in slabs (Identical) Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to4, an inside back cover and a back cover. This

14、 standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN27213 September1993 UDC676.16:620.113 Descriptors: Paper pulps, sampling English versi

15、on Pulps Sampling for testing (ISO7213:1981) Ptes Echantillonnage pour essais (ISO7213:1981) Zellstoffe Probenahme fr dir Prfzwecke (ISO 7213:1981) This European Standard was approved by CEN on 1993-09-06. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the

16、conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in t

17、hree official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of

18、Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat

19、: rue de Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN27213:1993 EEN 27213:1993 2 BSI 01-2000 Foreword This European Standard has been taken over by CEN/TC 172, Pulp, paper and board, from the work of ISO/TC 6, Paper, board and pulps, of the International Organizati

20、on for Standardization (ISO). The document was submitted to formal vote and adopted by CEN as a European Standard without any modification. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 19

21、94, and conflicting national standards shall be withdrawn at the latest by March 1994. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxem

22、bourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom.EN 27213:1993 BSI 01-2000 3 1 Scope and field of application This International Standard specifies a method of obtaining, for test purposes, a gross sample representative of a certain lot of pulp. This International Sta

23、ndard applies to all kinds of pulp delivered in bales or rolls. It is recommended for use when sampling for all kinds of testing purposes except for the determination of saleable mass, in which case other International Standards should be applied, such as ISO 801-1 or ISO 801-2. If, however, the pul

24、p is to be tested for saleable mass in addition to other properties, the gross sample obtained according to the appropriate International Standard for sampling saleable mass may also be used for the other pulp property tests. 2 References ISO 801, Pulps Determination of saleable mass, in lots Part 1

25、: Pulp baled in sheet form Part2:Pulps (such as flash-dried pulp) baled in slabs. 3 Definitions For the purpose of this International Standard, the following definitions apply. 3.1 lot a quantity of pulp of a single kind or grade, about which it is desired to make a judgement (usually to conform to

26、agreed quality criteria) the number of bales or rolls comprising a lot may be indicated by the invoice or agreed upon by the contracting parties 3.2 sample bale (or roll) a bale or roll that is selected for taking a specimen 3.3 specimen a quantity of pulp taken from a sample bale or roll 3.4 gross

27、sample the combined specimens taken from a particular lot 4 Principle Specimens of equal size are taken from a number of bales or rolls selected at random from the lot, and combined to form a gross sample. NOTEThe minimum number of bales to be sampled depends on the size of the lot. 5 Sample bales (

28、or rolls) All the sample bales or rolls shall be selected at random to be representative of the lot. The sample bales shall be intact and as little damaged as possible. To obtain a truly representative sample, the whole lot should be available for sampling. The minimum number of sample bales or roll

29、s to be taken, n, is given in the Table below. Where a whole lot is not available, the number of bales selected for sampling should be agreed upon between the interested parties. In the absence of any other agreement, the quantity of pulp available at the time of sampling shall be not less than half

30、 of the complete lot. If the bales or rolls have identification numbers relating to several series, the sample bales or rolls shall be selected at random in proportion to the number of bales or rolls in each of these series, using the principle given in the following Table. NOTEThe identification ma

31、rks and numbers should be reported for future reference, if necessary. Table Number of sample bales (or rolls) tobe taken 6 Procedure From each sample bale or roll take one specimen. Record the identification numbers of all the bales or rolls sampled. All the specimens should contain about the same

32、amount of dry fibre. This amount depends on which tests are to be performed. Normally100 g per specimen is sufficient. Total number ofbales(orrolls) inthelot Minimum number of sample bales (orrolls) N n Up to 100 10 101 to 200 15 201 to 300 18 301 to 400 20 401 to 500 23 501 to 600 25 601 to 700 27

33、701 to 800 29 801 to900 30 901 to 1 000 32 over 1 000 32 NOTEThe Table is based on the principle that n should not be less than the square root of N. However, this International Standard does not require more than 32 bales (or rolls) to be sampled irrespective of the size of the lot.EN 27213:1993 4

34、BSI 01-2000 Combine the specimens to form the gross sample. Wrap it, to protect it from contamination. Keep it away from sunlight, heat and moisture. Obtain the specimens as suggested in6.1, 6.2, 6.3 or6.4 as appropriate. If the pulp is to be tested for trace metals, do not use metallic tools and di

35、scard any cut edges of pulp where metallic contamination may have occurred. 6.1 Pulps baled in sheet form Open the sample bales, and randomly select one sheet from each bale. Do not select from the five top or bottom sheets, and avoid taking material which is within7 to8cm of the edge of the sheet.

36、From each sheet selected, tear a specimen of appropriate size, and discard the rest. To avoid opening bales, one of the following alternative methods may be used: a) The disc sampling procedure specified in ISO801-2. Each specimen then consists of an equal number of test discs. b) Cut a rectangular

37、area into the bale between the baling wires to a sufficient depth to obtain the appropriate size of specimen allowing for discarding the three outer sheets and for tearing off the cut edges. 6.2 Pulps (such as flash-dried pulps baled in slabs) The specimen may consist of test discs cut, for example,

38、 as specified in ISO801-2 or by pieces of pulp, broken out from the inside of a corner of a slab. The outer, exposed, portions of this material shall not be included. 6.3 Pulps in rolls Remove the three outer layers from the roll and cut or tear a specimen of appropriate size, but excluding the edge

39、s of the roll. 6.4 Pulp bales combined in units If a lot is delivered in combined units, consisting of a number of individual bales, the appropriate number of sample bales may be selected from the top and bottom bales in the units, to allow sampling by one of the alternative methods specified in6.1,

40、 without the need to dismantle units. 7 Sampling report If a sample report is prepared it shall include the following particulars: a) all the information necessary for complete identification of the lot; b) reference to this International Standard; c) the date and place of sampling; d) the total qua

41、ntity of the lot, number of bales if possible; e) the amount of pulp available for sampling; f) the number and identification (if it exists) of sample bales (or rolls); g) any unusual feature observed in the course of the sampling; h) any operations not specified in this International Standard, or r

42、egarded as optional, which might have affected the sampling.BSEN 27213:1994 BSI 01-2000 Publications referred to See national forewordBS EN 27213:1994 ISO 7213:1981 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing

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