This specification specifies the commonly used terms and definitions of reference materials, and is applicable to the formulation and revision of metrological technical regulations, analysis and testing technical documents, the development and use of reference materials, and is used as a reference in measurement and other scientific and technological fields. JJF 1005-2005 Common Terms and Definitions of Reference Materials JJF1005-2005 Standard Download Decompression Password: www.bzxz.net
This specification specifies the commonly used terms and definitions of reference materials, and is applicable to the formulation and revision of metrological technical regulations, analysis and testing technical documents, the development and use of reference materials, and is used as a reference in measurement and other scientific and technological fields.

National Metrology Technical Specification of the People's Republic of China JJF1005—2005
Terms and Definitions Used in Reference Materials
2005-10-09 Issued
2006-04-09 Implementation
Promulgated by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China JJF 1005-—2005
Terms and Definitions Used
in Reference Materials
JJF 1005—2005
Replaces JJF1005
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on October 9, 2005 and took effect on April 9, 2006 It will be implemented on the date.
Responsible unit:
Main drafting unit:
Cai Jia Drafting unit:
National Technical Committee for Physical and Chemical Metrology
National Center for Standard Material Research
China Institute of Metrology and Testing
Geological Research Institute of China Chemical Mining Bureau
The provisions of this specification shall be interpreted by the National Technical Committee for Physical and Chemical Metrology. The main drafter of this specification
Yu Yeza
Ni Xiaoli
Participating drafters:
Shi Fangdi
Han Shui Zhi
Yang Zhuolv
JJF100S
(National Standard Material Research Center)
(National Standard Material Research Center)
(China Institute of Metrology and Measurement)
(Geological Research Institute of China Chemical Geology and Mineral Resources Bureau) (National Standard Material Research Center)
References
Terms related to standard materials
Standard materials (RM)
Certified reference materials (CRM)
Benchmark standard materials Quality (PRM)
European standard
Measurement standard
National measurement standard
International measurement standard
Uniformity
Minimum sample size
Stability
Validity period
Terms of measurement and testing of reference materials
Accredited value
Unaccredited value
Consensus value (for a given measurement)
Uncertainty of the acknowledged value
Precision
Accuracy
Adopted reference point
|Origin
Inter-laboratory verification
Benchmark (test) method
Reference (test) method
Confirmed (test) method
5 Technical specifications for identification and publication of reference materials
Identification of reference materials
Identification certificate of reference materials
Identification report
Identification body
JJFIHOS
5.5 Producer of reference materials
Appendix A Additional terms
Appendix B
Reference documents
JF 005
JJF 105—2005
Common terms and definitions for reference materials
This technical specification is equivalent to, but not limited to, the common terms and definitions related to reference materials in 1992 Guideline 3). The relevant terms of JJF1005-1986 "Common Terms of Standard Materials (Trial)" are revised at the same time. 1 Scope
This specification specifies the common terms and definitions of standard materials, and is applicable to the formulation and revision of metrological technical regulations, analysis and testing technical documents, the development and use of standard materials, etc., and is used as a reference in measurement and other scientific and technological fields. 2 References
ISO Guide: 1992 "Common Terms and Definitions Related to Standard Materials". JJF1001-1998 "General Terms and Definitions of Metrology" 3 Terms Related to Standard Materials
3.1 Reference Material (RM) Reference Material (HM) A material or substance with one or more sufficiently uniform and well-defined properties used to calibrate measuring devices, evaluate measurement methods or assign values ​​to materials. Note: A reference material can be a pure or mixed gas, liquid or solid. For example, water for calibrating viscosity, blood for thermal analysis, and bath for calibrating pressure in chemical analysis. 3.2 Certified Reference Material (CRM): A reference material with a certificate of certification for which the values ​​of one or more properties are determined using established traceability procedures so that they can be traced back to a reproducible unit of measurement expressing the property value, and each certified property value is accompanied by an uncertainty of a given confidence level.
1 “Certificate of determination of reference material” is defined in 5.2. 2 Certified reference materials are generally prepared in batches and their property values ​​are determined by testing a sample representative of the entire batch of material with a specified uncertainty.
3 The properties of a certified reference material can sometimes be conveniently and reliably determined when the material is combined with specially prepared separation components, such as a material with a known triple point in a triple point bottle, a glass with a known optical density assembled into a reflective filter, or spherical particles of 100 mm and 70 mm mounted on a microscope slide. These components can also be considered certified reference materials. 4 All certified reference materials should comply with the JJF The definition of "measurement standard" given in the "Terms and Definitions of Metrology" 1001-199 has also been clarified by the national metrology administrative departments. 5 Some standard substances and certified standard substances cannot be determined by strictly defined physical and chemical measurement methods because they cannot be associated with a determined chemical structure or for other reasons. Such substances include certain biological substances, some of which have been specified by the World Health Organization for International Units. 3.3 Benchmark standard material (PHM) Principal reference material (PRM) is a standard material with the highest metrological properties and the value of the properties is determined by the basic method, referred to as the benchmark material. PHM: The benchmark material is developed by the national metrology laboratory, the blue value can be traced back to the SI unit, and it has been verified by the international comparison of the International Metrology Organization and has obtained the same degree of accuracy; 3.4 Benchmark standard 1005--2005
has the highest metrological properties, its value does not need to refer to other standards of the same quantity, designated or generally recognized as a standard of quantity
Note: The concept of standard applies equally to primary quantities and some derived quantities. 3.5 Secondary standard secondary standard! A measurement standard whose value is determined by comparison with a base of the same composition. Note: Most certified reference materials are determined by the source-to-reference method and are within the scope of a large number of standards. The placement of a certified reference material in a measurement does not necessarily limit the suitability of a particular material. For example, to determine the resistance of a gold matrix to a perfect gold matrix, it is much more difficult to use a material (secondary standard) that is similar in chemical composition to the sample being measured and to the matrix than to use a pure gold standard. In some areas of measurement, certified reference materials used for special analytical techniques may be used as references. 3.6 Measurement standard Standard A physical object, measuring instrument, standard material or measuring system used as a reference in order to define, achieve, preserve and reproduce a unit of quantity or a value. 3.7 National measurement standard National measurement standard A measurement standard recognized by national decision and used as the basis for determining the value of other measurement standards of related quantities in a country.
3.8 International measurement standard International measurement standard A measurement standard recognized by international agreement and used as the basis for determining the value of other measurement standards of related quantities internationally. 3.9 Characterization
The measurement of one or more physical, chemical, biological or process-technical characteristics related to the intended use of the standard substance.
3.10 Homogeneity
The state of having a similar structure or composition related to one or more characteristics of a substance: by measuring samples of a specific size taken from different packaging units (such as bottles, bags, etc.) or from the same packaging unit, if the measurement results are within the specified uncertainty range, the standard substance can be considered to be homogeneous for the specified characteristics. 3.1Minimum sampling amount minimumBampleintakeThe minimum amount of sample to ensure the uniformity of the standard material under the specified analytical measurement conditions. Note: In the case of passband, the sample amount used in the isotropic test is defined as the minimum sampling amount of the standard material to ensure the uniformity of the standard material. 3.12Stability
The ability of the characteristic value of the standard material to remain within the specified range under a specific time range and storage conditions. 3.13Expirationdatc
The maximum period of time to ensure the stability of the characteristic value of the standard material under the specified storage and use conditions. Note: The validity period should be given in the form of the final expiration date of the validity period of the standard material. 3.14Samplesample
A representative amount of material extracted from a batch of standard materials. Note:
1The method of determination must ensure that the sample can represent one or more characteristics studied in the batch of standard materials. 2
JJF1005—2005
2 The sample can be a part of a supply unit that is sufficient for reference. 4 Terminology for measurement and testing of reference materials
4.1 Certified value
A certified reference material is a value with uncertainty indicated in the certificate: Note: Certified value is scientifically called standard value:
4.2 Uncertified value The value of reference information provided by a certified reference material certificate or other sources, which has not been certified by the manufacturer or certification agency
1 Uncertified value includes reference value and uncertified value. 2 Reference value is an estimate of the true value, but it is limited by technical level. The uncertainty of this value has not been fully studied and evaluated. 3 Information value is a value of interest or use to the user, but there is insufficient information to assess the uncertainty of the value. 4.3 Consensus value (of a given quantity) The value of a characteristic quantity of a reference material obtained by inter-laboratory testing or by agreement between appropriate agencies or experts. Note: The accreditation body (see 5.4) may take appropriate measures to convert a consensus value into a certified value: 4.4 Untertainty of a certifier value: An estimate attached to the certified value of a quantity, which indicates the range of values ​​within which the "true estimate" is judged to fall with a specified confidence level: 4.5 Precision The degree of agreement between multiple independent test results obtained under specified conditions. Note: This term has been gradually replaced by repeatability: For repeatability, please refer to Appendix A, A.13 of this document. 4.6 Accuracy
The degree of agreement between the measurement result and the true value. Note: When identifying and using standard materials, the adopted reference value is usually used as the true value. In this case, it is defined as: "The degree of agreement between the measurement result and the adopted reference value (acceptlcd rmreference value) 4.7 Accepted reference value accepted reference value A reference value agreed upon by all parties for comparison. It can be: a) a theoretical value or measured value based on scientific principles; a) a value assigned based on experimental work of a country or international organization; c) a consensus value agreed upon based on collaborative experimental work conducted by a scientific or engineering team. 4.8 Traceability
The value of a measurement result or a measured standard can be compared with a specified reference standard through an uninterrupted chain of comparisons with a specified uncertainty, through a band It is a property that is linked to a national or international measurement standard. Notes:
1 This concept is often expressed by the adjective traceable: 2 This is not the same as the traceability of a measurement standard. 3 In the identification of chemical composition standards, the traceability of measurement values ​​is discussed in ISO Guide 35:1989 (E) (9.3.1), which pays more attention to this issue related to chemical analysis. Compared with the traceability of the calibration instrument in the analysis, the traceability of the chemical analysis standard is also discussed in ISO Guide 35:1989 (E) (9.3.1). 1005--2005
The source of scientific standards is usually those of equal or greater importance. 4.9 Interlaboratory test A series of measurements of one or more quantities carried out independently by several laboratories on a given sample of a substance. NOTE
, 1 It may also be referred to as "chain test", "joint research plan" and "collaborative analysis" 2 In addition to the determination of standard values, laboratory interlaboratory test can also be used for many other purposes. 4.10 Primary metho (of measurement) A measurement method with the highest metrological properties, whose operation can be completely described and understood, and the ultimate uncertainty can be expressed in units.
1 Reference source methods are divided into basic direct methods and reference ratio methods; 2 Reference direct methods do not refer to the same standard directly to the unknown value; 3 The reference ratio method measures the ratio of the known value to the same standard, and its operation must be fully described by the measurement equation. 4, l Reference (measurement) method relerence netbmnd (of rneasurerrent) is a method that has been thoroughly studied and clearly and strictly describes the required conditions and procedures for measuring one or more properties of a substance. This method has proven that its accuracy and other performance are commensurate with the intended purpose. Therefore, this method is suitable for the determination of the value of standard substances, and can also be used to evaluate other methods used in the same measurement process. 4.12 Validated (measurement) method: a method that has been proven to have satisfactory technical performance through a validation procedure. For example, its selectivity and applicability, measurement range and linearity, detection limit, quantification limit, recovery rate, repeatability and reproducibility and other technical parameters have been confirmed to meet the requirements of actual use:
5 Terminology for certification and publication of reference materials
S.1 Certification of a reference material The process of determining one or more characteristic values ​​of a material or substance by tracing back to the accurate reproduction of the unit representing the characteristic value, and issuing a certificate: 5.2 Certification of a reference material A document that states one or more characteristic values ​​of a reference material and their uncertainties, and proves that the necessary procedures to ensure its validity and traceability have been carried out. 5.3 Certification report A document that provides detailed information and supplementary contents of the certificate, such as the preparation of the material, the measurement method, factors affecting accuracy, systematic processing of the results, and the way to establish traceability. =5.4 Certifying body
An institution with the technical qualifications to issue reference material certificates that meet the requirements of ISD Guide 31. Note:
1 The accreditation body can be the same body as the development and reform body (the body that can obtain certified reference materials) and the testing body (the body that conducts research and measurement), or it can be an independent body. 2 Before the implementation of the national and international accreditation procedures, the technical qualifications of the accreditation body can only be determined based on the information provided in the certification card and accreditation technology of the reference material. 4
JJF 1005—2005
3 The accreditation body can adopt scientific expansion to convert the consensus value into the certified value (see 4.3). Ss Certified reference material producer certify the required material pkfurt An organization or institution that is technically qualified and meets the requirements of ISO Standard 34 and produces certified reference materials in accordance with the general and statistical principles detailed in ISO Guidelines 31 and 35. Appendix A
3JF1005—2005
Additional terms
The terms in this appendix are extracted from the first edition of the International Vocabulary of Basic and Useful Metrology (VIM) and the draft texts of ISO 3534-1 and ISO 3534-2, with annotations by REC0 where appropriate. It is recommended that these terms with the same meaning be used in the field of standard materials and certified reference materials. A1 (Production) batch (prorductinn) hatch A certain quantity of a product produced by a supplier at one time under the same conditions. Note: When the induced product is a standard material, the conditions of manufacture or production must be consistent to ensure its radioactivity. A.2 (Quantity) value value (of a quantity) is generally a number driven by the number of measurements of the characteristic value of the measured value A3 (True value) value (for a quantity) is a value that is completely consistent with the definition of a given specific quantity. (Measurement) uncertainty (of a measure) A.4
characterizes the dispersion of the values ​​of a measured quantity and is related to the measurement result. Note:
This parameter can be, for example, the standard deviation or its derivation, or the half width of the range that specifies the confidence level. 2 The uncertainty of measurement consists of 8 components. Among them: some components can be used to calculate the distribution of the results of the quantity series and are characterized by experimental standard deviations, while others can be used to estimate the frequency distribution based on experience or other information assumptions. It can also be expressed as a standard deviation. The measurement result should be the best estimate of the measured value, while all uncertainty components should be separated, including those introduced by electrical system effects (such as those related to the reference measurement standard). A.5 Standard uncertainty Hlandlimcertainty The uncertainty of measurement expressed as a standard deviation. A.6 Type A evaluation of uncertainty It is the evaluation of the standard uncertainty by means of statistical analysis of the observations. Note: The type A or type B evaluation of uncertainty is sometimes called type A uncertainty evaluation. A.7 Type H evaluation of uncertainty It is the evaluation of the standard uncertainty by means of statistical analysis of the observations. Note: The type B evaluation of uncertainty is sometimes called type H uncertainty evaluation. A.8 combined standard uncertainty combined standard uncertainty is the standard uncertainty obtained when the measurement result is obtained from the differences of several other quantities.
A.9 expanded uncertainty expanded uncertainty is the quantity that specifies the interval of the measurement result within which a large part of the distribution of the values ​​assigned to the measurand is expected to be contained. Note: The expanded uncertainty is also called extended uncertainty or range uncertainty. A.10 systematic error
is the difference between the mean value of an infinite number of measurements of the same measurand under repeatability conditions and the true value of the measurand.
A.ll random erroranrlonerror
JJF1005—2005
The measurement results are all averaged over an infinite number of measurements of the same measured object under more complex conditions. A, 12The confidence level level of conficlece and the confidence interval (or uncertainty range, see note) or the probability value related to the statistical allowable interval (1-12). Note:
1 In statistics, the uncertainty range is called the uncertainty region and the uncertainty limit is called the uncertainty limit. 2 Expressed in simple non-mathematical terms, it can be defined as the probability that the "true value" of a property falls within a given uncertainty on average.
Repeatability (of results of measurements) A.13
The consistency of the results obtained from multiple consecutive measurements of the same measurand under the same measurement conditions. Note:
1 This is also called the measurement condition. 2 The measurement condition includes:
relevant measurement sequence:
and observation time;
using the same measurement method and location under the same conditions;
repeated measurements over a short period of time.
3 Repeatability can be expressed quantitatively by the scalability of the measurement results. 1.14
Reproducibility (nf resulis of nmeasuremensThe agreement between the results of measurements of the same material under changed measurement conditions. NOTES
1 Given the change in measurement conditions, it shall be valid to describe the changed conditions. 2 The changed conditions may include:
Measurement method;
Measurer;
Measurement instrument;
Specific measurement standard;
Place;
Particular measurement condition;
Time. 3 Negative results may be expressed in terms of the sex of the measurement results. A.15 Comparability
Comparability
The property that the results of measurements obtained from subsamples of the same material are consistent within their uncertainties when measured on the same measurement scale (i.e. expressed in the same units). 714
Reproducibility (nf resulis of nmeasuremensThe agreement between the results of measurements of the same material under changed measurement conditions. NOTES
1 Given the change in measurement conditions, it shall be valid to describe the changed conditions. 2 The changed conditions may include:
Measurement method;
Measurer;
Measurement instrument;
Specific measurement standard;
Place;
Particular measurement condition;
Time. 3 Negative results may be expressed in terms of the sex of the measurement results. A.15 Comparability
Comparability
The property that the results of measurements obtained from subsamples of the same material are consistent within their uncertainties when measured on the same measurement scale (i.e. expressed in the same units). 714
Reproducibility (nf resulis of nmeasuremensThe agreement between the results of measurements of the same material under changed measurement conditions. NOTES
1 Given the change in measurement conditions, it shall be valid to describe the changed conditions. 2 The changed conditions may include:
Measurement method;
Measurer;
Measurement instrument;
Specific measurement standard;
Place;www.bzxz.net
Particular measurement condition;
Time. 3 Negative results may be expressed in terms of the sex of the measurement results. A.15 Comparability
Comparability
The property that the results of measurements obtained from subsamples of the same material are consistent within their uncertainties when measured on the same measurement scale (i.e. expressed in the same units). 7
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