GB/T 6977-2008 English PDF

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GB/T 6977-2008: Test method for ethanol extractives, ash, vegetable matter, total alkali-insoluble impurities in scoured wool
Status: Valid

GB/T 6977: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6977-2008	139	Add to Cart	3 days	Test method for ethanol extractives, ash, vegetable matter, total alkali-insoluble impurities in scoured wool	Valid
GB/T 6977-1986	239	Add to Cart	2 days	Standard test method for oil, ash and vegetable matter in scoured wool	Obsolete

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Basic data

Standard ID: GB/T 6977-2008 (GB/T6977-2008)
Description (Translated English): Test method for ethanol extractives, ash, vegetable matter, total alkali-insoluble impurities in scoured wool
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: W20
Classification of International Standard: 59.060.10
Word Count Estimation: 6,615
Date of Issue: 2008-08-20
Date of Implementation: 2008-12-01
Older Standard (superseded by this standard): GB/T 6977-1986
Quoted Standard: GB 1523; GB/T 8170; GB/T 14269
Regulation (derived from): National Standard Approval Announcement 2008 No.14 (Total No.127)
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 B drunk extracts washed wool, ash, Determination of total alkali insoluble content, vegetable impurities. This standard applies to all types of washed sheep, , other animal hair can be washed with reference to use.

GB/T 6977-2008: Test method for ethanol extractives, ash, vegetable matter, total alkali-insoluble impurities in scoured wool

---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 ethanol extractives, ash, vegetable matter, total ali-insoluble impurities in scoured wool ICS 59.060.10 W20 National Standards of People's Republic of China Replacing GB/T 6977-1986 Wash wool ethanol extract, ash, vegetable matter, Total Base insolubles content of the test method Posted 2008-08-20 2008-12-01 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 6977-1986 "washing wool oil, dust, miscellaneous content of the test method." This standard and GB/T 6977-1986 compared to the main changes are as follows. --- The standard name be changed to "wash wool ethanol extract, ash, vegetable matter, total alkaloids insoluble content test method"; --- Scope by the "Applies to wash wool" to "for all types of washed wool, other animal hair can be washed Refer to "; --- The 1986 version of the term "ethanol extract 1.1" to this edition of "ethanol extract 3.1", the 1986 edition of "1.4 Plants Quality "to this edition 3.3" vegetable matter "; --- Deleting version of the 1986 term, the term of "the ether extract 1.2"; --- Excerpts of the term to increase the "total alkaloids insolubles 3.4"; --- Deleting "method of ether extract 2.4" version of the 1986; --- Revised edition 1986 4.5 Classified alkali insoluble substance (see edition 7.4). This standard is proposed and managed by China Fiber Inspection Bureau. This standard was drafted. Textile Fiber Testing, Beijing, Inner Mongolia Fiber Inspection Bureau. The main drafters of this standard. Zhu Hongliang, Zhang Qi, Yang Meng. This standard replaces the standards previously issued as follows. --- GB/T 6977-1986. Wash wool ethanol extract, ash, vegetable matter, Total Base insolubles content of the test method

1 Scope

This standard specifies the ethanol extract, ash, vegetable matter, determination of total alkaloids insoluble content of washed wool. This standard applies to all types of washed wool, other animal hair washing can also refer to use.

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 1523 wool GB/T 8170 numerical rounding rules GB/T 14269 wool test sampling methods

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 With ethanol as a solvent, scoured wool material from the surface or internal organization extraction. 3.2 Wash wool by 750 ℃ \u200b\u200bresidual material ignited. 3.3 Wash wool surface adhesion of seeds, crushed grass clippings, spiral burr, seeds and hard head branch and other substances. 3.4 Under controlled conditions, scoured wool dissolved in the sodium hydroxide solution to remove any residual material insoluble ash after drying. 3.5 Treated sample period, twice before and after weighing the difference does not exceed 0.05% after the first mass, the mass is after a constant weight. Principle 4 4.1 Determination of the ethanol extract After the sample measured absolute dry mass, Soxhlet extractor repeatedly by ethanol extraction, solvent recovery, drying and weighing extracts obtained by calculation The content of ethanol extract. 4.2 Determination of ash After the dry weight of the sample measured at 750 ℃, fully burning, residue is weighed, calculated ash content can be obtained. ......

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