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GB/T 24900-2010: Inspection of grain and oils -- Determination of moisture content in maize -- Near-infrared method
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| GB/T 24900-2010 | English | 139 |
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Inspection of grain and oils -- Determination of moisture content in maize -- Near-infrared method
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GB/T 24900-2010
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Basic data | Standard ID | GB/T 24900-2010 (GB/T24900-2010) | | Description (Translated English) | Inspection of grain and oils -- Determination of moisture content in maize -- Near-infrared method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | B20 | | Classification of International Standard | 67.060 | | Word Count Estimation | 6,682 | | Date of Issue | 2010-06-30 | | Date of Implementation | 2011-01-01 | | Quoted Standard | GB 5491; GB/T 10362; 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 rapid determination of near-infrared analysis of terms and definitions corn 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 the rapid determination of moisture content of corn. This standard does not apply to arbitration test. | GB/T 24900-2010: Inspection of grain and oils -- Determination of moisture content in maize -- Near-infrared method
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Inspection of grain and oils.Determination of moisture content in maize.Near-infrared method
ICS 67.060
B20
National Standards of People's Republic of China
Inspection of grain and corn moisture content determination 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 standard is based on the classical method based on rapid determination of moisture content in maize methods, arbitration test national standard has been prescribed
Conventional methods, namely GB/T 10362 "Inspection of grain and corn determination of moisture content" 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, Jilin Grain and Oil Quality Supervision and Inspection Station, Sichuan grain and oil central monitoring station, Chongqing OILS
Quality Supervision, Inspection Station, Xinjiang Grain and Oil Product Quality Supervision and Inspection Station.
Drafters of this standard. Wu Chun-rong, Tang Jian Huai, Fengxi Zhong, Li, Zhangxing Mei, Liu Yuping.
Inspection of grain and corn moisture content determination by Near Infrared Spectroscopy
1 Scope
This standard specifies the method for rapid determination of NIR terms and definitions corn moisture content, principles, equipment, measurement results at
Management and representation, recognition and processing requirements, accuracy and precision and test reports of abnormal samples.
This standard applies to maize 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 10362 Inspection of grain and corn moisture determination
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 C-H, N-H, O-H bond and other pan-frequency vibration or rotation of the near infrared light absorption characteristics, chemical
Metrology method to establish the correlation between corn samples near infrared spectroscopy and moisture content between the calculation of the moisture content of the corn 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). Only for the preparation of corn flour samples crushed sample
Particle size distribution and uniformity should be consistent with the requirements established NIR analyzer calibration model when, should be used and the use of modeling and calibration verification
When prepared in the same process.
6 Determination
6.1 preparation before the test
6.1.1 Sampling and sample 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 the case where the state of at least a day of near infrared analyzer (5.1) monitoring once with monitoring samples. It should track and monitor the results every day,
Monitoring the measurement results of the same sample of crude protein compared with the initial measurement result, the absolute difference should not exceed 0.2%. Preparation of monitoring samples
Accordance with the provisions of Appendix A to perform.
6.1.5 The monitoring sample measurement results do not meet the requirements of 6.1.4, should stop using, and reported to the network administrator or equipment suppliers to be adjusted
Whole or maintenance.
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