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GB/T 24898-2010: Inspection of grain and oils -- Determination of moisture content in wheat -- Near-infrared method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 24898-2010 | English | 139 |
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Inspection of grain and oils -- Determination of moisture content in wheat -- Near-infrared method
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GB/T 24898-2010
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Basic data | Standard ID | GB/T 24898-2010 (GB/T24898-2010) | | Description (Translated English) | Inspection of grain and oils -- Determination of moisture content in wheat -- Near-infrared method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B20 | | Classification of International Standard | 67.060 | | Word Count Estimation | 6,667 | | Date of Issue | 2010-06-30 | | Date of Implementation | 2011-01-01 | | Quoted Standard | GB 5491; GB/T 5497; GB/T 24895 | | Regulation (derived from) | National Standard Approval Announcement 2010 No.2 (Total No.157) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the method for determining the near-infrared analysis of terms and definitions wheat moisture content, principle, equipment, measurement, result processing and presentation, identify and deal with abnormal samples, accuracy and precision requirements and test reports. This standard applies to rapid determination of moisture content in wheat. This standard does not apply to arbitration test. | GB/T 24898-2010: Inspection of grain and oils -- Determination of moisture content in wheat -- Near-infrared method
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Inspection of grain and oils. Determination of moisture content in wheat. Near-infrared method
ICS 67.060
B20
National Standards of People's Republic of China
Inspection of grain
Determination of moisture content in Wheat by Near Infrared Spectroscopy
Issued on. 2010-06-30
2011-01-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This is a standard method for rapid determination of moisture content in wheat established on the basis of the classical methods for arbitration inspection, we should have national standards
Conventional methods provided that the GB/T 5497 "grain and oilseeds testing Determination of moisture" shall prevail.
Appendix A of this standard is a normative appendix.
The standard proposed by the National Food Authority.
This standard by the National Standardization Technical Committee OILS.
This standard was drafted. Henan University of Technology, the State Grain Reserve Wuxi Scientific Research and Design Institute, Beijing foodstuff inspection by the sea
Southern Province Grain and Oil Quality Supervision, Inspection Station, grain and oil quality inspection center in Tianjin, Shanghai Cereals and Oils Products Quality Supervision, Inspection Station, Zhejiang Province, grain and oil production
Product Quality Inspection Center, Fox Analytical Instruments, Perten Instruments.
The main drafters of this standard. Bian Branch, Wu Chun-rong, Huai Tang Jian, Chen Zhihua, Wangcai Qin, Tang Ying, Xiaoqing Min, Lvyan Chun should Semillon, Zhao Wushan,
Liu Yufei.
Inspection of grain
Determination of moisture content in Wheat by Near Infrared Spectroscopy
1 Scope
This standard specifies the method for the determination of NIR wheat moisture content of terms and definitions, principles, equipment, measurement, process and results
He said the requirements identified and addressed, accuracy and precision and test reports abnormal samples.
This standard applies to wheat rapid determination of moisture content.
This standard does not apply to arbitration inspection.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB 5491 grain and oilseeds testing for sampling, and sample method
GB/T 5497 grain and oilseeds - Determination of water test
GB/T 24895 Inspection of grain NIR calibration model validation and network management and maintenance of general rules
3 Terms and Definitions
Terms and definitions GB/T 24895 apply to this standard established.
Principle 4
Use of water molecules in the O-H bond and other pan-frequency vibration or rotation of the near-infrared light absorption properties, built by chemometric methods
Li relationship wheat near-infrared spectroscopy and its moisture content between the calculated moisture content wheat samples.
5 Equipment
5.1 NIR analyzer. Add OILS NIR network equipment should comply with GB/T 24895 requirements. No added OILS near infrared
Analysis of network equipment, verify eligibility in accordance with GB/T 24895 in the provisions relating to the calibration model validation.
5.2 sample grinding equipment (applicable to the determination of powdered samples NIR analyzer). Preparation of samples for whole wheat flour, crushed samples of grain
Distribution and uniformity should be consistent with the requirements established NIR analyzer calibration model when. When modeling and calibration and verification should be used when using
The same preparation procedure.
6 Determination
6.1 preparation before the test
6.1.1 Sample collection and decimation executed according to the provisions of GB 5491.
6.1.2 Sample finishing to remove impurities in the sample and broken kernels.
6.1.3 according to the near-infrared analyzer (5.1) specification requirements for instrument self-test and warm-up test.
6.1.4 In use, at least a day of near infrared analyzer (5.1) monitor with a monitor samples, samples of crude protein of the same monitor
Content (dry basis) compared with the initial measurement result of the measurement results, the absolute difference should be less than 0.2%. Compliance monitoring samples prepared in accordance with Appendix A of
Scheduled execution.
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