BS ISO 6670-2002 en_2187 Instant coffee - Sampling method for bulk units with liners《速溶咖啡.带内衬层的散装单元包装的取样方法》.pdf

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1、BRITISH STANDARD BS ISO 6670:2002 Instant coffee Sampling method for bulk units with liners ICS 67.140.20 BS ISO 6670:2002 This British Standard, having been prepared under the direction of the Consumer Products and Services Sector Policy and Strategy Committee, was published under the authority of

2、the Standards Policy and Strategy Committee on 7 August 2002 BSI 7 August 2002 ISBN 0 580 40188 X National foreword This British Standard reproduces verbatim ISO 6670:2002 and implements it as the UK national standard. It supersedes BS 6379-2:1984 which is withdrawn. The UK participation in its prep

3、aration was entrusted to Technical Committee AW/15, Coffee, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this docume

4、nt may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. U

5、sers are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for ch

6、ange, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 6, an inside back cover and a

7、 back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsINTERNATIONAL STANDARD ISO 6670 Second edition 2002-08-01 Reference number ISO 6670:2002(E) OSI 2002 Instant coffee Sampling method fo

8、r bulk units with liners Caf soluble Mthode dchantillonnage pour emballages en vrac avec doublureBSISO6670:2002BSISO6670:2002iiISO 7662002:0)E( ISO 2002 r llAithgs reservde iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (I

9、SO 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. International organizations, gov

10、ernmental 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 rules given in the ISO/IEC

11、 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 possibility that some of t

12、he 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 6670 was prepared by Technical Committee ISO/TC 34, Food products, Subcommittee SC 15, Coffee. This second editi

13、on cancels and replaces the first edition (ISO 6670:1983), which has been technically revised. Annex A forms a normative part of this International Standard. BSISO6670:2002iiiANRETNIITOTS LANDNADRA ISO 7662002:0)E( ISO 2002 r llAithgs reservde 1 Instant coffee Sampling method for bulk units with lin

14、ers 1 Scope 1.1 This International Standard specifies a method of sampling a consignment of instant coffee, shipped in ten units or more, for the purpose of examination to determine whether the consignment complies with a contract specification. The cases used have inner linings of moisture-resistan

15、t material hermetically sealed because of the hygroscopic nature of instant coffee, and are in units greater than net mass, typically up to . This method is also applicable to units of more than , usually named as big bags or supersacks. The cases are generally made of cardboard of appropriate stren

16、gth and the big bags are made of suitable plastic material. 1.2 The method may also be used for the selection and preparation of a sufficiently representative sample of the consignment, intended a) to serve as a basis for an offer for sale, b) for examination to verify that the instant coffee to be

17、offered for sale satisfies the producers sales specification, c) for examination to determine one or more of the characteristics of the instant coffee for technical, commercial, administrative and arbitration purposes, and d) for retention as a reference sample for use, if required, in litigation. I

18、n practice, consignments of instant coffee are often blended in use and before packing. 1.3 This International Standard is applicable to all types of instant coffee, as defined in ISO 3509, contained in all types of units with liners, with the exception stated in 1.4. 1.4 For bulk density and partic

19、le size, this International Standard applies to spray-dried powder and freeze-dried instant coffees only, as defined in ISO 3509, due to the intrinsic fragility of particles of agglomerated instant coffee, which leads to greater breakdown and headspace in the final packed units for the consumer. 2 N

20、ormative 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 agreements based on

21、 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 currently v

22、alid International Standards. ISO 3509, Coffee and its products Vocabulary 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 consignment quantity of instant coffee in every unit, dispatched or received at one time and covered by a

23、 particular contract or shipping document 10 kg 50 kg 50 kg BSISO6670:20021ISO :0766(2002)E 2 ISO 2002 Ar llithgr seresvde NOTE A consignment may be composed of one or more lots. 3.2 lot part of a consignment or a consignment, from one source, presumed to have uniform characteristics and with simila

24、r identifying codes NOTE A lot consists of not more than 1 500 of every unit of the same type and mass, containing instant coffee assumed to have common properties of reasonably uniform character and to which a given scheme of examination can be applied. 3.3 damaged case damaged big bag unit having

25、a liner which is torn, indicating possible damage to, or contamination of, the instant coffee therein, or unit which is soiled or otherwise contaminated, in such a way as is likely to cause contamination of the instant coffee itself 3.4 sample part of a lot, from which the properties of the lot are

26、to be estimated by examination, i.e. every unit that has been selected 3.5 increment quantity of of instant coffee taken from a single unit of a specific lot 3.6 bulk sample quantity of not less than of instant coffee obtained by combining all the increments (3.5) taken from units of a specific lot

27、3.7 blended bulk sample quantity of instant coffee obtained by combining and blending all the increments (3.5) taken from units of a specific lot 3.8 laboratory sample quantity of not less than of instant coffee taken from the blended bulk sample (3.7) of a specific lot, without altering its composi

28、tion 4 Requirements 4.1 Sampling personnel Sampling shall be carried out by experienced samplers, or samplers qualified by training and experience, or shall be carried out by specialized sampling organizations. 4.2 Sampling conditions Sampling shall be carried out on apparently sound units and liner

29、s in a sheltered place in such a manner as to protect the samples, the sampling apparatus, and the containers and packages intended to receive the samples, against contamination. Sampling should be carried out in such a way that there is minimal moisture change in the sample, for example by sampling

30、 in an air-conditioned room, preferably at and maximum relative humidity. The sampler shall report any damage to units and liners and shall not include increments taken from such units in the bulk sample. 100 g 20 g 1 000 g 300 g 20 C4 5 % BSISO6670:20022ISO 7662002:0)E( ISO 2002 r llAithgs reservde

31、 3 If damaged units or liners are present, the sampler shall check all the lot for damage. 4.3 Identification and general inspection of the lot prior to sampling Before any samples are taken, the lot shall be positively identified. 5 Sampling equipment 5.1 Scoop See annex A. 5.2 Sample containers an

32、d packages The containers and packages mentioned in 4.2, together with their closure systems, shall be clean and dry and shall be made from materials that do not affect the odour, taste or composition of the samples. They shall be sufficiently robust to withstand hazards during transport, and shall

33、preserve the samples unchanged for the appropriate period, with particular reference to the hazards of moisture absorption. 6 Procedure 6.1 Taking increments 6.1.1 The exact number of units to be selected shall be the subject of prior agreement between the interested parties. 6.1.2 Take the units to

34、 be sampled according to a system of random numbers. Then open the units, break the seal of the inner liner, and take the increment using the scoop according to the instructions for its use (see annex A). In order to obtain a bulk sample of (see 3.6), it may be necessary to take more than one increm

35、ent from each unit. 6.1.3 After taking the increments, reseal the inner liners and close the units. 6.2 Preparation of samples 6.2.1 General Samples obtained from the increments described under 6.1 may be prepared for detailed laboratory examination by either one or other of two procedures: a) accor

36、ding to 6.2.2 to 6.2.4, where a single blended sample is to be obtained; b) according to 6.2.5, where all increments are separately obtained and packed into separate containers. 6.2.2 Bulk sample Examine the increments as they are taken. If they are evidently homogeneous, combine them in a container

37、. Label the bulk sample obtained (see clause 7). If there is a noticeable lack of homogeneity amongst the increments, keep them separate and report this condition in the sampling report (see clause 8). 1 000 g BSISO6670:20023ISO :0766(2002)E 4 ISO 2002 Ar llithgr seresvde Samples taken from damaged

38、units or liners shall not be included in the bulk sample. 6.2.3 Blended bulk sample Remove the bulk sample (6.2.2) from its original container and thoroughly mix it, but avoid unnecessarily rough handling that may result in excessive breakage of the particles. 6.2.4 Laboratory sample Prepare each la

39、boratory sample by removing a quantity of not less than from the blended bulk sample (6.2.3). Thoroughly mix the laboratory sample, but avoid unnecessarily rough handling. More than one laboratory sample may be required. 6.2.5 Separate increments Place the increments as taken from every unit into se

40、parate containers and label each (clause 7), which will be the laboratory samples. It may be necessary to take more than one increment per unit, according to laboratory test requirements. By this procedure, the laboratory will be able to report on any differences of analytically determined character

41、istics between units of a lot. 7 Packing and marking of samples 7.1 Precautions to be taken when packing samples The containers shall be moisture-proof and oxygen-proof, and fitted with an airtight closure. They shall be completely filled with instant coffee. The closure system shall be selected to

42、prevent subsequent loss or tampering. 7.2 Marking The samples shall be identified by recording the following information on the container, or on a label affixed to the container, unless there is a stipulation to the contrary in the contract: a) date of sampling; b) name and signature of sampler; c)

43、shipping documents or contract number; d) ship (or other transport vehicle); e) location; f) identifying number(s); g) quantity; h) mass of the sample. 8 Sampling report The sampling report shall give all information relevant to the method of sampling and shall refer to the presence of damaged units

44、, the type(s) of damage and the number of damaged units in the lot. Any other pertinent observation concerning the condition of the lot shall also be included. The sampler shall report the conditions in the vicinity of the lot, especially with respect to any potentially contaminating material in the

45、 vicinity, and conditions (relative humidity) relative to moisture absorption (if accurate assessment of the dry matter content in the units is required). 300 g BSISO6670:20024ISO 7662002:0)E( ISO 2002 r llAithgs reservde 5 9 Precautions during storage and transport of samples 9.1 Laboratory samples

46、 shall be dispatched to the place of examination as soon as possible after preparation. A copy of the sampling report (see clause 8) shall be sent with them. 9.2 After taking the laboratory samples, the blended bulk sample or individual increments from every unit from each lot shall be retained for

47、further use if required, until final acceptance of the consignment by the purchaser. BSISO6670:20025ISO :0766(2002)E 6 ISO 2002 Ar llithgr seresvde Annex A (normative) Scoop sampling method A.1 Apparatus A.1.1 Stainless steel scoop, of capacity corresponding to approximately of instant coffee. A.2 P

48、rocedure Take each of the units selected, break the seal and remove approximately of coffee from the middle of the unit towards its edge. After this procedure, collect ten coffee portions from the middle of the units, using a stainless steel scoop (A.1.1), to provide a representative increment of ap

49、proximately . 100 g 2cm 1 000 g BSISO6670:20026BS ISO 6670:2002 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that th