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GB/T 22427.5-2008: Starch -- Determination of fineness
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 22427.5-2008 | English | 149 |
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Starch -- Determination of fineness
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GB/T 22427.5-2008
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Basic data | Standard ID | GB/T 22427.5-2008 (GB/T22427.5-2008) | | Description (Translated English) | Starch -- Determination of fineness | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X11 | | Classification of International Standard | 67.180.20 | | Word Count Estimation | 5,548 | | Date of Issue | 2008-10-19 | | Date of Implementation | 2009-03-01 | | Older Standard (superseded by this standard) | GB/T 12096-1989 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.17 (Total No.130) | | Issuing agency(ies) |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 fineness of starch screening method. This standard applies to dried powdered starch and modified starch. | GB/T 22427.5-2008: Starch -- Determination of fineness---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.
Starch. Determination of fineness
ICS 67.180.20
X11
National Standards of People's Republic of China
Replacing GB/T 12096-1989
Determination of fineness of starch
Posted 2008-10-19
2009-03-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 12096-1989 "Determination of fineness of starch."
This standard compared with GB/T 12096-1989 The main changes are as follows.
--- Standard name changed to "starch fineness determination";
--- Revised scope. Instead of dry powdered starch and modified starch;
--- Increased detection method. Determination of fineness of starch as an arbitration method using standard screening test method, the test sieve prescribed frequency,
Amplitude and other projects aperture screen surface;
--- Added "7 test report."
This standard is proposed and managed by China General Chamber of Commerce.
This standard was drafted. Chinese Chamber of Commerce Business Standard centers, food, Jiangnan University, China Starch Industry Association modified starch
Professional Committee, Shandong Zhucheng promoting trade Corn Development Company Limited.
The main drafters of this standard. Guzheng Biao, Hong Yan, Cheng Li, Qiu Lizhong, Jin Xiaolei.
Determination of fineness of starch
1 Scope
This standard specifies the method for the determination of starch fineness of sieving.
This standard applies to dried powdered starch and modified starch.
2 Terms and definitions
The following terms and definitions apply to this standard.
2.1
Sieve with screening samples, sieve sieve obtained by dividing the ratio of the total sample of substance and quality.
Principle 3
Sieved with Sieve, sieve-like through the process of obtaining the sample quality.
4 Instrument
4.1 Balance. a sense of the amount of 0.1g.
4.2 Sieve. woven wire mesh, selected in accordance with a predetermined aperture product requirements.
4.3 test sieve. woven wire mesh, selected in accordance with a predetermined aperture product requirements. Vibration frequency. 1420 times/min; Amplitude.
2mm ~ 5mm.
4.4 rubber ball. diameter 5mm.
5 operation
5.1 manual sieving
5.1.1 Sample preparation
Samples should be thoroughly mixed.
5.1.2 said sample
Weigh the sample (5.1.1) 50g, accurate to 0.1g.
5.1.3 Screening
Uniform shaking Sieve (4.2) until the screening no less than so far. Weighing under the screen, to the nearest 0.1g.
5.2 standard test sieve method (Arbitration Act)
5.2.1 Sample preparation
Samples should be thoroughly mixed.
5.2.2 said sample
Weigh the sample (5.2.1) 50g, accurate to 0.1g.
5.2.3 Screening
Evenly pour the sample test sieve (4.3), insert the rubber ball (4.4) 5, fixed sieve, shaking 10min after weighing sieve material,
Accurate to 0.1g.
5.3 Determination of the number of
Parallel experiments should be carried out.
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