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SN/T 2843-2011: Test method for the gum percentage of raw silk
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 2843-2011 | English | 139 |
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Test method for the gum percentage of raw silk
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SN/T 2843-2011
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Basic data | Standard ID | SN/T 2843-2011 (SN/T2843-2011) | | Description (Translated English) | Test method for the gum percentage of raw silk | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | W40 | | Classification of International Standard | 59.060.10 | | Word Count Estimation | 5,576 | | Date of Issue | 2011-02-25 | | Date of Implementation | 2011-07-01 | | Quoted Standard | GB/T 6682; GB/T 8170 | | Regulation (derived from) | ?AQSIQ-Inspection [2011] 90 | | Issuing agency(ies) | General Administration of Customs | | Summary | This standard specifies the method for the determination of raw silk with plastic rate. This standard applies to any specification of raw silk. | SN/T 2843-2011: Test method for the gum percentage of raw silk---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.
Test method for the gum percentage of raw silk
People's Republic of China Entry-Exit Inspection and Quarantine Standards
Silk Determination of gum content
Issued on. 2011-02-25
2011-07-01 implementation
People's Republic of China
The State Administration of Quality Supervision, Inspection and Quarantine released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard is proposed and managed by the National Certification and Accreditation Administration Committee.
This standard was drafted. People's Republic of China Exit Inspection and Quarantine Xiaoshan, Hangzhou, People's Republic of China Entry-Exit Inspection and Quarantine
Bureau, People's Republic of China Ningbo Exit Inspection and Quarantine.
The main drafters of this standard. Hu Wei, Wan Wang Jun, Pan Lulu, Yang Lisheng, Chen Yu, Tan Meng, ranking Pei Hua, Zhimin Xu.
Silk Determination of gum content
1 Scope
This standard specifies the method for determination of raw silk with plastic rate.
This standard applies to any specifications of raw silk.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
Laboratory use specifications and test methods GB/T 6682 Analysis
GB/T 8170 repair value expressed about the rules and limit values and judgment
Principle 3
Sericin not use alkali-resistant features, neutral soap or sodium carbonate were scouring of raw silk, raw silk by calculating the difference in weight before and after scouring the dry, draw
Gum containing raw silk percentage.
4 Reagents
4.1 Industrial neutral soap solution. Weigh neutral industrial soap 10g, accurate to 0.01g, dissolved in 1000mL two water (see GB/T 6682),
Formulated as a 10g/L solution of neutral soap industry.
4.2 Sodium carbonate solution. Weigh 0.5g of sodium carbonate (AR), accurate to 0.01g, dissolved in water 1000mL two configured 0.5g/L of carbon
Sodium.
5. Apparatus
5.1 purple copper pots (length 840mm × width 285mm × height 310mm) or stainless steel pot (specifications are not limited, but at least meet 5L capacity).
5.2 Cleaning the pool. Open specifications to ensure clean quality prevail.
5.3 electric or gas stove.
5.4 Oven with balance. to control the temperature (105 ℃ ± 2 ℃); balance. accuracy 0.01g or more.
6 Test procedure
6.1 Sampling
Take a representative sample of three, each about 10g, in which the two as samples, one as a backup sample.
6.2 dry weight before scouring
The sample was placed in an oven (5.4), under the conditions of 105 ℃ ± 2 ℃ drying to constant weight, accurate to 0.01g.
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