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1、INTERNATIONAL STANDARD ISO 6670 Second edition 2002-08-01 Reference number ISO 6670:2002(E) ISO 2002 Instant coffee Sampling method for bulk units with liners Caf soluble Mthode dchantillonnage pour emballages en vrac avec doublure Copyright International Organization for Standardization Provided by
2、 IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 07:15:15 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6670:2002(E) ii ISO 2002 All rights reserved PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Ado
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7、+ 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 07:15:15 MDTNo reproduction or networking perm
8、itted without license from IHS -,-,- ISO 6670:2002(E) ISO 2002 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out t
9、hrough 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, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO colla
10、borates 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 Directives, Part 3. Draft International Standards adopted by the technical committees are
11、 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 the elements of this International Standard may be the subject of patent rights. ISO shall
12、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 edition cancels and replaces the first edition (ISO 6670:1983), which has been technically revi
13、sed. Annex A forms a normative part of this International Standard. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 07:15:15 MDTNo reproduction or networking permitted without license from IHS -,
14、-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 07:15:15 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARDISO 6670:2002(E) ISO 2002 All rights r
15、eserved 1 Instant coffee Sampling method for bulk units with liners 1Scope 1.1This 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 specifi
16、cation. The cases used have inner linings of moisture-resistant 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.
17、The cases are generally made of cardboard of appropriate strength and the big bags are made of suitable plastic material. 1.2The 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,
18、 b)for examination to verify that the instant coffee to be 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
19、a reference sample for use, if required, in litigation. In practice, consignments of instant coffee are often blended in use and before packing. 1.3This 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
20、exception stated in 1.4. 1.4For bulk density and particle 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 he
21、adspace in the final packed units for the consumer. 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
22、 do not apply. However, parties to agreements 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. Me
23、mbers of ISO and IEC maintain registers of currently valid International Standards. ISO 3509, Coffee and its products Vocabulary 3Terms 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
24、, dispatched or received at one time and covered by a particular contract or shipping document 10 kg50 kg 50 kg Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 07:15:15 MDTNo reproduction or netw
25、orking permitted without license from IHS -,-,- ISO 6670:2002(E) 2 ISO 2002 All rights reserved NOTEA 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 similar identifying codes NOTEA lo
26、t 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 a liner which is torn, indica
27、ting 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 to be estimated by examinatio
28、n, 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 3.7 blended bulk sample quant
29、ity 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 composition 4Requirements 4.1Samplin
30、g 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. 4.2Sampling conditions Sampling shall be carried out on apparently sound units and liners in a sheltered place in such a
31、 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 in an air-conditioned room, pre
32、ferably 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 g20 g 1 000 g 300 g 20 C 45 % Copyright International Organization for Standardization Provided by IHS under license with I
33、SO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 07:15:15 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6670:2002(E) ISO 2002 All rights reserved 3 If damaged units or liners are present, the sampler shall check all the lot for damage. 4.3Identification and
34、 general inspection of the lot prior to sampling Before any samples are taken, the lot shall be positively identified. 5Sampling equipment 5.1Scoop See annex A. 5.2Sample containers and packages The containers and packages mentioned in 4.2, together with their closure systems, shall be clean and dry
35、 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 preserve the samples unchanged for the appropriate period, with particular reference to the hazards of moisture abso
36、rption. 6Procedure 6.1Taking increments 6.1.1The exact number of units to be selected shall be the subject of prior agreement between the interested parties. 6.1.2Take the units to be sampled according to a system of random numbers. Then open the units, break the seal of the inner liner, and take th
37、e 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 increment from each unit. 6.1.3After taking the increments, reseal the inner liners and close the units. 6.2Preparation of sam
38、ples 6.2.1General 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)according 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 sepa
39、rately obtained and packed into separate containers. 6.2.2Bulk sample Examine the increments as they are taken. If they are evidently homogeneous, combine them in a container. Label the bulk sample obtained (see clause 7). If there is a noticeable lack of homogeneity amongst the increments, keep the
40、m separate and report this condition in the sampling report (see clause 8). 1 000 g Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 07:15:15 MDTNo reproduction or networking permitted without lic
41、ense from IHS -,-,- ISO 6670:2002(E) 4 ISO 2002 All rights reserved Samples taken from damaged units or liners shall not be included in the bulk sample. 6.2.3Blended bulk sample Remove the bulk sample (6.2.2) from its original container and thoroughly mix it, but avoid unnecessarily rough handling t
42、hat may result in excessive breakage of the particles. 6.2.4Laboratory sample Prepare each laboratory 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
43、 be required. 6.2.5Separate increments Place the increments as taken from every unit into separate 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, t
44、he laboratory will be able to report on any differences of analytically determined characteristics between units of a lot. 7Packing and marking of samples 7.1Precautions to be taken when packing samples The containers shall be moisture-proof and oxygen-proof, and fitted with an airtight closure. The
45、y shall be completely filled with instant coffee. The closure system shall be selected to prevent subsequent loss or tampering. 7.2Marking 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
46、 the contrary in the contract: a)date of sampling; b)name and signature of sampler; c)shipping documents or contract number; d)ship (or other transport vehicle); e)location; f)identifying number(s); g)quantity; h)mass of the sample. 8Sampling report The sampling report shall give all information rel
47、evant to the method of sampling and shall refer to the presence of damaged units, 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 t
48、he lot, especially with respect to any potentially contaminating material in the vicinity, and conditions (relative humidity) relative to moisture absorption (if accurate assessment of the dry matter content in the units is required). 300 g Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Aramco HQ/9980755100 Not for Resale, 04/23/2007 07:15:15 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 6670:2002(E) ISO 20