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Calibration Specification for Milk Quantitative Composition Analyzers
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Basic data
| Standard ID | JJF 1820-2020 (JJF1820-2020) |
| Description (Translated English) | Calibration Specification for Milk Quantitative Composition Analyzers |
| Sector / Industry | Metrology & Measurement Industry Standard |
| Classification of Chinese Standard | A60 |
| Classification of International Standard | 17.020 |
| Word Count Estimation | 15,118 |
| Date of Issue | 2020 |
| Date of Implementation | 2020-04-17 |
| Issuing agency(ies) | State Administration for Market Regulation |
JJF 1820-2020: Calibration Specification for Milk Quantitative Composition Analyzers
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Milk Quantitative Composition Analyzers
National Measurement Technical Specification of the People's Republic of China
Calibration Specification for Dairy Ingredient Analyzer
2020-01-17 release
2020-04-17 Implementation
Issued by the State Administration of Market Supervision and Administration
Calibration Specification for Dairy Ingredient Analyzer
Focal point. National Biometrics Technical Committee
Main drafting unit. China Inspection (Henan) Metrology and Testing Co., Ltd.
Participated in the drafting unit. Henan Institute of Metrology
Chinese Academy of Metrology
This specification entrusts the National Biometrics Technical Committee to interpret
The main drafters of this specification.
Ding Fengyuan (China Inspection (Henan) Metrology and Testing Co., Ltd.)
Zhao Yingchen (China Inspection (Henan) Metrology and Testing Co., Ltd.)
Participating drafters.
Xu Fen (Henan Provincial Institute of Metrology)
Li Chen (Henan Institute of Metrology)
Wu Liqing (Chinese Academy of Metrology)
Kong Xiaoping (Henan Provincial Institute of Metrology)
table of Contents
Introduction (Ⅱ)
1 Scope (1)
2 References (1)
3 Overview (1)
4 Measurement characteristics (1)
5 Calibration conditions (1)
5.1 Environmental conditions (1)
5.2 Calibration reference materials and other equipment (1)
6 Calibration items and calibration methods (2)
6.1 Preparation before calibration (2)
6.2 Calibration method (2)
7 Expression of calibration results (3)
8 Recalibration time interval (3)
Appendix A Series Standard Solution Preparation and Linear Error Calculation Example (4)
Appendix B Calibration Record Format (6)
Appendix C Internal Format of Calibration Certificate (8)
Appendix D Example of Uncertainty Evaluation of Indication Error (9)
Introduction
This specification is based on JJF 1071-2010 "Rules for Compiling National Measurement and Calibration Specifications", JJF 1059.1-2012
Compilation of "Measurement Uncertainty Evaluation and Representation" and JJF 1265-2010 "Biometric Terms and Definitions". Linearity error
The calibration methods and technical indicators of the measurement repeatability and the use of ISO 9622..2013/IDF141..2013 "Milk and
Liquid Dairy Products Infrared Spectroscopy Application Guide (Milkandliquidmilkproducts-Guidelinesforthe
applicationofmid-infraredspectrometry) section 6.1.4 and section 11.1.
This specification is the first release.
Calibration Specification for Dairy Ingredient Analyzer
1 Scope
This specification is applicable to dairy ingredient analyzers (hereinafter referred to as analyzers) based on the principle of mid-infrared spectral absorption
calibration.
2 Reference documents
This specification refers to the following documents.
JJF 1071-2010 Compilation Rules for National Measurement and Calibration Specifications
GB/T 6682-2008 Analytical laboratory water specifications and test methods
For dated reference documents, only the dated version applies to this specification; for those without date references
The latest version (including all amendments) is applicable to this specification.
3 Overview
The analyzer is based on the principle of spectral absorption to quickly measure the content of protein, fat, lactose and other components in liquid milk
instrument. The analyzer determines the absorbance of liquid milk at a specific wavelength in the mid-infrared
The built-in absorbance-content curve equation calculates the protein, fat, lactose and other contents in dairy products. Analyzer Pass
It is often composed of light source, wavelength controller, sample cell (including sampler), detector, signal conversion/output, etc.
4 Measurement characteristics
Analyzer calibration items and technical index requirements are shown in Table 1.
Table 1 Calibration items and technical index requirements
Calibration items
Technical index
Fat protein lactose
Indication error/(g/100g) ± 0.30 ± 0.30 ± 0.30
Measurement repeatability/(g/100g) 0.04 0.04 0.04
Linearity error /% 2 2 2
Note. The above technical indicators are not used to determine eligibility, for reference only.
5 Calibration conditions
5.1 Environmental conditions
According to the environmental conditions specified in the instrument manual, the ambient temperature, relative humidity, etc. should be recorded during the calibration process
data.
5.2 Calibration reference materials and other equipment
5.2.1 Dairy standard substance. at least contains protein, fat, lactose (or total sugar) content, relative expansion is not correct
...
