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GB/T 18147.2-2008: Test method for hemp fibre -- Part 2: Test method for residual gum content of hemp fibre
Status: Valid GB/T 18147.2: Evolution and historical versions
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| GB/T 18147.2-2008 | English | 139 |
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Test method for hemp fibre -- Part 2: Test method for residual gum content of hemp fibre
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GB/T 18147.2-2008
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| GB/T 18147.2-2000 | English | 199 |
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Test method for hemp fibre-Part 2: Test method for residual gum content in hemp fibre
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GB/T 18147.2-2000
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Basic data | Standard ID | GB/T 18147.2-2008 (GB/T18147.2-2008) | | Description (Translated English) | Test method for hemp fibre -- Part 2: Test method for residual gum content of hemp fibre | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | W30 | | Classification of International Standard | 59.060.10 | | Word Count Estimation | 6,641 | | Date of Issue | 2008-06-17 | | Date of Implementation | 2008-09-01 | | Older Standard (superseded by this standard) | GB/T 18147.2-2000 | | Quoted Standard | GB/T 8170; GB/T 18146.1; GB/T 18146.2; GB/T 18146.3; GB/T 18147.1 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.10 (Total No.123) | | 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 test methods for residual gum content of hemp fiber. This section applies to cannabis hemp, hemp flax, hemp noil. | GB/T 18147.2-2008: Test method for hemp fibre -- Part 2: Test method for residual gum content of hemp fibre
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Test method for hemp fibre Part 2. Test method for residual gum content of hemp fibre
ICS 59.060.10
W30
National Standards of People's Republic of China
Replacing GB/T 18147.2-2000
Test method for hemp fiber
Part 2. Test method for residual gum
Posted 2008-06-17
2008-09-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 18147 "hemp fiber test method" is divided into the following sections.
--- Part 1. Test method for oil content;
--- Part 2. Test method for residual gum;
--- Part 3. Test method for length;
--- Part 4. Test method for fineness;
--- Part 5. Test method for breaking strength;
--- Part 6. Test methods for defect.
This section GB/T 18147 Part 2.
". Test method for residual gum hemp fiber test methods - Part 2" GB/T 18147.2-2000 this section instead.
Section compared with the GB/T 18147.2-2000 The main changes are as follows.
--- Increased references GB/T 18146.1 definitions of the terms of the residual gum;
--- --- Electric heating device to thermostat electric sets;
--- The Erlenmeyer flask to a round bottom flask;
--- Increasing the temperature water bath and oven temperature deviation (± 1 ℃);
--- Equipment increased sense of balance amount is 0.01g;
--- Glass sand core crucible by the model No. 3-3 to No. 2-2;
--- The mass of the sample was composed of 5g to 4.00g ± 0.20g;
--- Quality symbol to the G m1;
--- The sample was cut to a length of not more than 1.0cm;
--- Results in an increase of the standard deviation.
This section proposed and managed by China Fiber Inspection Bureau.
This part of the main drafting unit. Fiber Inspection Bureau of Shandong Province, Shanxi Textile oasis limited liability company.
The main drafters of this section. Weishou Wen, Chi Gang, in Lihua, Meng Kai, Wang Zhongxin.
This section was first released in 2000, this is the first revision.
Test method for hemp fiber
Part 2. Test method for residual gum
1 Scope
GB/T 18147 provisions of this part of the test method for hemp fiber residual gum content.
This section applies to cannabis resin, hemp hemp, hemp drop Ma.
2 Normative references
The following documents contain provisions which, through reference GB/T 18147 in this section, constitute provisions of this part. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this
section.
GB/T 8170 numerical rounding rules
GB/T 18146.1 hemp fiber - Part 1. hemp cannabis resin
GB/T 18146.2 hemp fiber - Part 2. Cannabis hemp
Part of GB/T 18146.3 hemp 3. Cannabis NOIL
GB/T 18147.1 Test method for hemp fiber - Part 1. Test method for oil content
3 Terms and Definitions
GB/T 18146.1 and established the following terms and definitions apply GB/T 18147 in this section.
3.1
Hemp oil to dry residual glial amount of oil to the amount of dry hemp fiber percentage.
Principle 4
The use of the hemp variety of different components of different chemical reagents, successively dissolved pectin, hemicellulose, cellulose, residual
Lignin obtained residual gum content.
5 Apparatus and reagents
5.1 Equipment and Tools
a) Soxhlet extractor;
b) constant temperature water bath. temperature deviation of ± 1 ℃;
c) oven. Temperature range 50 ℃ ~ 150 ℃, temperature deviation of ± 1 ℃;
d) thermostat electric sets. 500mL, 300W;
e) vacuum suction pump. 30L/min;
f) balance. a sense of the amount of 0.01g, 0.1mg;
g) Sieve. 120 mesh.
5.2 Glassware
a) round-bottomed flask. 500mL;
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