1、January 2015Translation by DIN-Sprachendienst.English price group 13No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、 65.160!%?0_“2281360www.din.deDDIN ISO 3308Routine analytical cigarette-smoking machine Definitions and standard conditions (ISO 3308:2012),English translation of DIN ISO 3308:2015-01Zigaretten-Abrauchmaschine fr Routineanalysen Begriffe und Standardbedingungen (ISO 3308:2012),Englische bersetzung v
3、on DIN ISO 3308:2015-01Machine fumer analytique de routine pour cigarettes Dfinitions et conditions normalises (ISO 3308:2012),Traduction anglaise de DIN ISO 3308:2015-01SupersedesDIN ISO 3308:2000-12www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Documen
4、t comprises 29 pages01.15 A comma is used as the decimal marker. Contents Page National foreword .3 National Annex NA (informative) Bibliography .3 Introduction .4 1 Scope .5 2 Normative references .5 3 Terms and definitions 5 4 Standard conditions .7 4.1 Machine pressure drop 7 4.2 Puff duration .7
5、 4.3 Puff volume .8 4.4 Puff frequency.8 4.5 Puff profile .8 4.6 Restricted smoking 8 4.7 Puff number.8 4.8 Cigarette holder 8 4.9 Cigarette position 10 4.10 Ashtray position 10 5 Specification for the routine analytical smoking machine 10 5.1 General . 10 5.2 Operating principle and puff profile .
6、11 5.3 Reliability and compensation 11 5.4 Cigarette holders and smoke traps . 12 5.5 Test atmosphere 13 5.6 Puff counting 13 5.7 Ignition 13 5.8 Smoking enclosure . 13 Annex A (normative) Ambient air flow around cigarettes in routine analytical smoking machines: Control and monitoring . 15 Annex B
7、(informative) Description of the puffing mechanism of a piston-type smoking machine 22 Annex C (informative) Diagrammatic representation of a puff profile . 27 Bibliography . 29 DIN ISO 3308:2015-012National foreword The text of this document (ISO 3308:2012) has been prepared by Technical Committee
8、ISO/TC 126 “Tobacco and tobacco products” (Secretariat: DIN, Germany). After the revision of the fourth edition, the fifth edition of ISO 3308 was published in 2012. Working Committee NA 057-04-01 AA Tabak und Tabakerzeugnisse of the responsible German body involved in the preparation of this standa
9、rd, the DIN-Normenausschuss Lebensmittel und landwirtschaftliche Produkte (DIN Standards Committee Food and Agricultural Products), decided to adapt DIN ISO 3308:2000 to the fifth edition of ISO 3308, published in 2012. The Working Committee made its decision in particular from the point of view of
10、a necessary harmonization of the international and national standards in the field of smoke analysis. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. DIN shall not be held responsible for identifying any or all such patent rights.
11、 The DIN Standard corresponding to the International Standard referred to in Clause 2 of this document is as follows: ISO 3402 DIN ISO 3402 Amendments This standard differs from DIN ISO 3308:2000-12 as follows: a) an Introduction has been included (ISO 3308:2000/Amd. 1:2009) stating that no machine
12、smoking regime can represent all human smoking behaviour. The technical substance of the standard has not been changed. b) Subclause 5.8, the last formula in Annex C and the figures have been revised; c) the standard has been brought in line with the current rules of presentation. Previous editions
13、DIN 10240: 1969-04 DIN 10240-1: 1978-04, 1991-04 DIN V 10240-4: 1985-04 DIN ISO 3308: 1992-07; 2000-12 National Annex NA (informative) Bibliography DIN ISO 3402, Tobacco and tobacco products Atmosphere for conditioning and testing DIN ISO 3308:2015-013IntroductionExperience and knowledge gained from
14、 the use of analytical cigarette-smoking machines has highlighted a need to specify certain requirements, which are addressed in this International Standard.No machine smoking regime can represent all human smoking behaviour: it is recommended that cigarettes also be tested under conditions of a dif
15、ferent intensity of machine smoking than those specified in this International Standard; machine smoking testing is useful to characterize cigarette emissions for design and regulatory purposes, but communication of machine measurements to smokers can result in misunderstandings about differences in
16、 exposure and risk across brands; smoke emission data from machine measurements may be used as inputs for product hazard assessment, but they are not intended to be nor are they valid as measures of human exposure or risks. Communicating differences between products in machine measurements as differ
17、ences in exposure or risk is a misuse of testing using ISO standards.Routine analytical cigarette-smoking machine Definitions and standard conditionsDIN ISO 3308:2015-0141 ScopeThis International Standard: defines smoking parameters and specifies the standard conditions to be provided for the routin
18、e analytical machine smoking of cigarettes; specifies the requirements 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
19、immediately surrounding them, and the methods of air velocity 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
20、puff profile and illustrates definitions and standard conditions.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced documen
21、t (including any amendments) applies.ISO 3402, Tobacco and tobacco products Atmosphere for conditioning and testing3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1test atmosphereatmosphere to which a sample or test piece is exposed throughout th
22、e testNOTE 1 It 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 2 The test may be carried out either in the laboratory or in a special chamber termed the “test chamber”,
23、 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 3 Adapted from ISO 558:1980, d
24、efinition 2.3.3.2butt lengthlength of unburnt cigarette remaining at the moment when the smoking is stopped3.3restricted smokingcondition that exists when the butt end of a cigarette is closed to the atmosphere between successive puffsDIN ISO 3308:2015-0153.4free smokingcondition that exists when th
25、e butt end of a cigarette is completely exposed to the atmosphere between successive puffs3.5pressure dropstatic 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
26、 circuit 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/s3.6draw resistancenegative pressure which has to be applied to the butt end, under test conditions (see ISO 3402) in order to sustain a
27、 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 mmNOTE 1 Any ventilation zones and the tobacco rod are exposed to the atmosphere.NOTE 2 Measurement values are expressed in pascals (Pa). They used to be expressed in mi
28、llimetres 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 3 The concept of draw resistance may also be subjectively judged when a cigarette is smoked by a consumer/taste panel. Under such circumstanc
29、es, draw resistance is not measured objectively because the conditions of the formal definition are not met.3.7puff durationinterval of time during which the port is connected to the suction mechanism3.8puff volumevolume leaving the butt end of a cigarette and passing through the smoke trap3.9puff n
30、umbernumber of puffs necessary to smoke a cigarette to a specified butt length3.10puff frequencynumber of puffs in a given time3.11puff terminationtermination of the connection of the port to the suction mechanism3.12puff profileflow rate measured directly behind the butt end of a cigarette and depi
31、cted graphically as a function of time3.13dead volumevolume which exists between the butt end of a cigarette and the suction mechanism3.14cigarette holderdevice for holding the mouth end of a cigarette during smokingDIN ISO 3308:2015-0163.15smoke trapdevice for collecting such part of the smoke from
32、 a sample of cigarettes as is necessary for the determination of specified smoke components3.16portaperture of the suction mechanism through which a puff is drawn and to which is attached a smoke trap3.17channelelement of a smoking machine consisting of one or more cigarette holders, one trap and a
33、means of drawing a puff through the trap3.18compensationability to maintain constant puff volumes and puff profiles when the pressure drop at the port changes3.19cigarette positionposition of a cigarette on the smoking machineNOTE In particular, it is determined by the angle made by the longitudinal
34、 axis of the cigarette and the horizontal plane when a cigarette is inserted into a cigarette holder in an analytical smoking machine.3.20mainstream smokeall smoke which leaves the butt end of a cigarette during the smoking process3.21sidestream smokeall smoke which leaves a cigarette during the smo
35、king process other than from the butt end3.22ashtraydevice positioned under the cigarettes in their holders to collect ash falling from the cigarettes during smoking3.23clearing puffany puff taken after the cigarette has been extinguished or removed from the cigarette holder3.24ambient air flowair f
36、low around the cigarettes during the smoking processNOTE See Annex A.4 Standard conditions4.1 Machine pressure dropThe 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 (see 3.5) shall not exceed 30
37、0 Pa.4.2 Puff durationThe standard puff duration (see 3.7) shall be (2,00 0,02) s.DIN ISO 3308:2015-0174.3 Puff volumeThe standard puff volume (see 3.8) measured in series with a pressure drop device of 1 x (1 5 %) kPa shall be (35,0 0,3) ml. In one puff duration (see 3.7) not less than 95 % of the
38、puff volume shall leave the butt end of the cigarette.4.4 Puff frequencyThe standard puff frequency (see 3.10) shall be one puff every (60 0,5) s measured over 10 consecutive puffs.4.5 Puff profileThe puff profile (see 3.12) shall be measured with an impedance of 1 x (1 5 %) kPa as specified in 4.3.
39、 It shall be bell-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 direct
40、ion of flow be reversed.NOTE Principles of suction mechanisms using a piston pump to obtain the puff profile are given in Annex B.4.6 Restricted smokingAn analytical smoking machine shall be a restricted smoker i.e. fulfil the conditions for restricted smoking (see 3.3).4.7 Puff numberEach individua
41、l puff shall be counted and recorded and the puff number (see 3.9) rounded off to the nearest one-tenth of a puff, based on the puff duration.4.8 Cigarette holderThe design of the standard cigarette holder (see 3.14) is such that it shall cover 9,0 mm, with a range of 8,0 mm to 9,5 mm, from the butt
42、 end of a cigarette, and shall be impermeable to smoke components and to air. Labyrinth seals with dimensions appropriate for the diameter of the cigarettes under test shall be used in the cigarette holder.Either the cigarette holder or the smoke trap shall be equipped with a perforated disc (washer
43、) of plain expanded synthetic rubber, closed-cell sponge grade, which partly obstructs the butt end of the cigarette. The synthetic rubber shall have a density of 150 kg/m3, low swell oil resistance and compression-deflection range of 35 kPa to 63 kPa. Four labyrinth seals shall be used; the one clo
44、sest to the butt end (back seal) shall be reversed. The dimensions of the washer and labyrinth seals are given in Figure 1. The washer shall be supported by a structure with a hole in its centre of 4 mm diameter.The axis of the holder shall be within 0 to + 5 of the horizontal and the holder shall e
45、nsure that the cigarette is held within 5 of the holder axis.An example of a suitable assembly is given in Figure 2.Manufacturing tolerances for the individual components of the cigarette holder result in an uneven tolerance about the specified 9 mm insertion depth.DIN ISO 3308:2015-018Dimensions in
46、 millimetresa) Labyrinth sealb) WasherCigarette diameter A B C4,5 to 5,49 1,45 2,5 45,5 to 6,49 1,7 3 4,56,5 to 7,49 1,95 3,5 5,57,5 to 9 2,2 4 6,5Figure 1 Cigarette holder: Labyrinth seal and perforated disc (washer) (dimensional details)DIN ISO 3308:2015-019Key1 labyrinth seals2 washer support3 wa
47、sher4 labyrinth seal (reversed)5 labyrinth capNOTE Washer support is for use where a central glass fibre smoke trap is used to trap smoke from more than one cigarette.Figure 2 Cigarette holder (schematic)4.9 Cigarette positionThe cigarette holders shall be arranged so that no cigarette influences th
48、e burning of any other cigarette.The cigarette shall be positioned in the holder so that the butt end is in contact with the washer when inserted.NOTE See 3.19.4.10 Ashtray positionThe ashtray shall be placed in a horizontal plane between 20 mm and 60 mm below the plane of the axes of the cigarettes
49、.NOTE See 3.22.5 Specification for the routine analytical smoking machine5.1 GeneralThe smoking machine shall comply with the standard conditions (see 4.1 to 4.10) and the special conditions given in 5.2 to 5.8.DIN ISO 3308:2015-01105.2 Operating principle and puff profile5.2.1 The machine shall include a device to draw a fixed volume of air (puff) through a cigarette. A schematic diagram is shown in Figure 3.5.2.2 The machine shall produce a bell-shaped puff profile
