《ISO-3308-2000.pdf》由会员分享，可在线阅读，更多相关《ISO-3308-2000.pdf（30页珍藏版）》请在三一文库上搜索。
1、Reference number ISO 3308:2000(E) ISO 2000 INTERNATIONAL STANDARD ISO 3308 Fourth edition 2000-04-15 Routine analytical cigarette-smoking machine Definitions and standard conditions Machine fumer analytique de routine pour cigarettes Dfinitions et conditions normalises Copyright International Organi
2、zation for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:31:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3308:2000(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance wi
3、th Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing
4、policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Eve
5、ry care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2000 All rights reserved. Unless otherwise specified, no part of this publicati
6、on may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 ? CH-1211 Geneva
7、20 Tel. + 41 22 749 01 11 Fax + 41 22 734 10 79 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2000 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:31:
8、27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3308:2000(E) ISO 2000 All rights reservediii ContentsPage Foreword.iv Introduction.v 1Scope 1 2Normative reference1 3Terms and definitions .1 4Standard conditions4 4.1Machine pressure drop (see 3.5)4 4.2Puff duration (s
9、ee 3.7) .4 4.3Puff volume (see 3.8).4 4.4Puff frequency (see 3.10) 4 4.5Puff profile (see 3.12).4 4.6Restricted smoking (see 3.3)4 4.7Puff number (see 3.9) 4 4.8Cigarette holder (see 3.14)4 4.9Cigarette position (see 3.19).6 4.10Ashtray position (see 3.22).6 5Specification for the routine analytical
10、 smoking machine6 5.1General6 5.2Operating principle and puff profile.6 5.3Reliability and compensation.7 5.4Cigarette holders and smoke traps8 5.5Test atmosphere9 5.6Puff counting9 5.7Ignition9 5.8Smoking enclosure9 Annex A (normative) Ambient air flow around cigarettes in routine analytical smokin
11、g machines: Control and monitoring.11 Annex B (informative) Description of the puffing mechanism of a piston-type smoking machine18 Annex C (informative) Diagrammatic representation of a puff profile.21 Bibliography23 Copyright International Organization for Standardization Provided by IHS under lic
12、ense with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:31:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3308:2000(E) iv ISO 2000 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide federation of na
13、tional standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Intern
14、ational organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the
15、rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the
16、possibility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 3308 was prepared by Technical Committee ISO/TC 126,Tobacco and tobacco products. This
17、 fourth edition cancels and replaces the third edition (ISO 3308:1991), which has been editorially revised. Annex A forms a normative part of this International Standard. Annexes B and C are for information only. Copyright International Organization for Standardization Provided by IHS under license
18、with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:31:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3308:2000(E) ISO 2000 All rights reservedv Introduction This International Standard describes the requirements found necessary to be specified in t
19、he light of knowledge and experience gained with analytical cigarette-smoking machines. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:31:27 MDTNo reproduction or networking permitted without
20、 license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:31:27 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARDISO 3308:2000(E) I
21、SO 2000 All rights reserved1 Routine analytical cigarette-smoking machine Definitions and standard conditions 1Scope This International Standard ?defines smoking parameters and specifies the standard conditions to be provided for the routine analytical machine smoking of cigarettes; ?specifies the r
22、equirements for a routine analytical smoking machine complying with the standard conditions. Annex A specifies the ambient air velocities surrounding cigarettes in a routine analytical smoking machine, the mechanical design of the enclosures immediately surrounding them, and the methods of air veloc
23、ity measurement including the location where air velocity is measured. Annex B describes, as an example, the special characteristics of a typical smoking machine incorporating a piston type of puffing mechanism. Annex C includes a diagram of a puff profile and illustrates definitions and standard co
24、nditions. 2Normative reference The following normative document contains provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, this publication do not apply. However, parties to agreeme
25、nts based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of
26、 currently valid International Standards. ISO 3402,Tobacco and tobacco products Atmosphere for conditioning and testing. 3Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 test atmosphere atmosphere to which a sample or test piece i
27、s exposed throughout the test NOTE 1It is characterized by specified values for one or more of the following parameters: temperature, relative humidity and pressure, which are kept within the specified tolerances. NOTE 2The test may be carried out either in the laboratory or in a special chamber ter
28、med the “test chamber“, or in the conditioning chamber, the choice depending on the nature of the test piece and on the test itself. For example, close control of the test atmosphere may not be necessary if the change in properties of the test piece is insignificant over the test period. NOTE 3Adapt
29、ed from ISO 558:1980, definition 2.3. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:31:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3308:2000(E) 2 ISO 200
30、0 All rights reserved 3.2 butt length length of unburnt cigarette remaining at the moment when the smoking is stopped 3.3 restricted smoking condition that exists when the butt end of a cigarette is closed to the atmosphere between successive puffs 3.4 free smoking condition that exists when the but
31、t end of a cigarette is completely exposed to the atmosphere between successive puffs 3.5 pressure drop static pressure difference between the two ends of the test piece completely encapsulated in a measuring device such that no air can pass through the outer membrane (or wrapping); or a pneumatic c
32、ircuit when it is traversed by an air flow under steady conditions in which the measured volumetric flow, under standard conditions, at the output end is 17,5 ml/s 3.6 draw resistance negative pressure which has to be applied to the butt end, under test conditions (see ISO 3402) in order to sustain
33、a volumetric flow of 17,5 ml/s, exiting at the butt end, when the cigarette is encapsulated in a measurement device to a depth of 9 mm NOTE 1Any ventilation zones and the tobacco rod are exposed to the atmosphere. NOTE 2Measurement values are expressed in pascals (Pa). They used to be expressed in m
34、illimetres water gauge (mm WG). The values given previously in mm WG are converted into pascals using the following conversion factor: 1 mm WG = 9,8067 Pa. NOTE 3The concept of draw resistance may also be subjectively judged when a cigarette is smoked by a consumer/taste panel. Under such circumstan
35、ces, draw resistance is not measured objectively because the conditions of the formal definition are not met. 3.7 puff duration interval of time during which the port is connected to the suction mechanism 3.8 puff volume volume leaving the butt end of a cigarette and passing through the smoke trap 3
36、.9 puff number number of puffs necessary to smoke a cigarette to a specified butt length 3.10 puff frequency number of puffs in a given time 3.11 puff termination termination of the connection of the port to the suction mechanism Copyright International Organization for Standardization Provided by I
37、HS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:31:27 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3308:2000(E) ISO 2000 All rights reserved3 3.12 puff profile flow rate measured directly behind the butt end of a cigarette and de
38、picted graphically as a function of time 3.13 dead volume volume which exists between the butt end of a cigarette and the suction mechanism 3.14 cigarette holder device for holding the mouth end of a cigarette during smoking 3.15 smoke trap device for collecting such part of the smoke from a sample
39、of cigarettes as is necessary for the determination of specified smoke components 3.16 port aperture of the suction mechanism through which a puff is drawn and to which is attached a smoke trap 3.17 channel element of a smoking machine consisting of one or more cigarette holders, one trap and a mean
40、s of drawing a puff through the trap 3.18 compensation ability to maintain constant puff volumes and puff profiles when the pressure drop at the port changes 3.19 cigarette position position of a cigarette on the smoking machine NOTEIn particular, it is determined by the angle made by the longitudin
41、al axis of the cigarette and the horizontal plane when a cigarette is inserted into a cigarette holder in an analytical smoking machine. 3.20 mainstream smoke all smoke which leaves the butt end of a cigarette during the smoking process 3.21 sidestream smoke all smoke which leaves a cigarette during
42、 the smoking process other than from the butt end 3.22 ashtray device positioned under the cigarettes in their holders to collect ash falling from the cigarettes during smoking 3.23 clearing puff any puff taken after the cigarette has been extinguished or removed from the cigarette holder 3.24 ambie
43、nt air flow air flow around the cigarettes during the smoking process NOTESee annex A. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/16/2007 10:31:27 MDTNo reproduction or networking permitted without
44、license from IHS -,-,- ISO 3308:2000(E) 4 ISO 2000 All rights reserved 4Standard conditions 4.1Machine pressure drop (see 3.5) The whole of the flow path between the butt end of the cigarette and the suction mechanism shall offer the least possible resistance, and its pressure drop shall not exceed
45、300 Pa. 4.2Puff duration (see 3.7) The standard puff duration shall be (2,00 ? 0,02) s. 4.3Puff volume (see 3.8) The standard puff volume measured in series with a pressure drop device of 1 kPa ? 5 % shall be (35,0 ? 0,3) ml. In one puff duration (see 3.7) not less than 95 % of the puff volume shall
46、 leave the butt end of the cigarette. 4.4Puff frequency (see 3.10) The standard puff frequency shall be one puff every (60 ? 0,5) s measured over 10 consecutive puffs. 4.5Puff profile (see 3.12) The puff profile shall be measured with an impedance of 1 kPa ? 5 % as specified in 4.3. It shall be bell
47、-shaped with a maximum between 0,8 s and 1,2 s from the start of the puff. The increasing and decreasing parts of the profile shall not have more than one point of inflection each. The maximum flow rate shall be between 25 ml/s and 30 ml/s (see annex B). At no point shall the direction of flow be re
48、versed. NOTEPrinciples of suction mechanisms using a piston pump to obtain the puff profile are given in annex B. 4.6Restricted smoking (see 3.3) An analytical smoking machine shall be a restricted smoker (i.e. fulfil the conditions for restricted smoking). 4.7Puff number (see 3.9) Each individual puff shall be counted and recorded and the puff number rounded off to the nearest one-tenth of a puff, based on the puff duration. 4.8Cigarette holder (see