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JJF 1820-2020 English PDF

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JJF 1820-2020: Calibration Specification for Milk Quantitative Composition Analyzers
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1820-2020	English	349	Add to Cart	3 days [Need to translate]	Calibration Specification for Milk Quantitative Composition Analyzers	Valid	JJF 1820-2020

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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	15,128
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)

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

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