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AS 2001.7-2005
[Current]Methods of test for textiles, Method 7: Quantitative analysis of fibre mixtures (BS 4407:1988, MOD)
Adopts BS 4407:1988 and its Amendments 1 and 2 to specify a method of determining binary fibre mixtures. A method using sulfuric acid has been added.
Published: 18/03/2005
Pages: 30
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
PREFACE
Section 1 General
1 Scope
2 Definitions
Section 2 Information common to the methods given for the quantitative analysis of fibre mixtures
3 Apparatus
3.1 Glass-filter crucibles
3.2 Soxhlet extractor
3.3 Weighing bottles
3.4 Ventilated oven
3.5 Desiccator
3.6 Analytical balance
3.7 Vacuum flask
3.8 Additional apparatus
4 Reagents
4.1 Light petroleum
4.2 Water
4.3 Other reagents
5 Conditioning and testing atmosphere
6 Sample
7 Pretreatment of sample
8 Test procedure
8.1 General instructions
8.1.1 Drying
8.1.2 Drying of specimen
8.1.3 Drying residue
8.1.4 Cooling
8.1.5 Weighing
8.2 Procedure
9 Calculation and expression of results
9.1 Two-component mixtures
9.1.1
9.1.2
9.1.3
9.2 Three-component mixtures
9.2.1 General
9.2.2 Variant 1
9.2.3 Variant 2
9.2.4 Variant 3
9.2.5 Variant 4
9.3 Calculation of the percentage of each component with addition of agreed allowance for moisture and other matter and also allowances, where appropriate, for non-fibrous matter removed in the pretreatment
10 Report
10.1
10.2
10.3
10.4
10.5
10.6
Section 3 Method of quantitative analysis by manual separation
11 General
12 Principle
13 Apparatus and reagents
13.1 Apparatus
13.1.1 Needle
13.1.2 Twist tester
13.2 Reagents
14 Test procedure
14.1 Analysis of yarn
14.2 Analysis of fabric
15 Calculation and expression of results
15.1 General
15.2 Method based on clean dry mass
15.2.1 Binary mixtures
15.2.2 Ternary mixtures
15.3
Section 4 Methods of quantitative analysis by chemical procedures
16 Precision of the methods
17 Method 1. Binary mixtures of acetate and certain other fibres (method using acetone)
17.1 General
17.2 Principle
17.3 Apparatus and reagents
17.3.1 Apparatus
17.3.1.1 Conical flask
17.3.2 Reagent
17.3.2.1 Acetone
17.4 Test procedure
17.5 Calculation and expression of results
17.6 Precision
18 Method 2. Binary mixtures of certain protein fibres (wool, animal hair, silk or protein) and certain other fibres (method using hypochlorite)
18.1 General
18.2 Principle
18.3 Apparatus and reagents
18.3.1 Apparatus
18.3.1.1 Erlenmeyer flask
18.3.1.2 Means of controlling temperature
18.3.2 Reagents
18.3.2.1 Hypochlorite reagent
18.3.2.2 Acetic acid solution
18.4 Procedure
18.5 Calculation and expression of results
18.6 Precision
19 Method 3. Binary mixtures of viscose, cupro or certain types of modal and cotton (method using formic acid and zinc chloride)
19.1 General
19.2 Principle
19.3 Apparatus and reagents
19.3.1 Apparatus
19.3.1.1 Conical flask
19.3.1.2 Means of controlling the temperature of the flask and contents
19.3.2 Reagents
19.3.2.1 Formic acid/zinc chloride solution
19.3.2.2 Dilute ammonia solution
19.4 Test procedure
19.5 Calculation and expression of results
19.6 Precision
20 Method 4. Binary mixtures of polyamide or nylon and certain other fibres (method using formic acid 80 % m/m)
20.1 General
20.2 Principle
20.3 Apparatus and reagents
20.3.1 Apparatus
20.3.1.1 Conical flask
20.3.2 Reagents
20.3.2.1 Formic acid solution
20.3.2.2
20.4 Test procedure
20.5 Calculation and expression of results
20.6 Precision
21 Method 5. Binary mixtures of acetate and triacetate (method using benzyl alcohol)
21.1 General
21.2 Principle
21.3 Apparatus and reagents
21.3.1 Apparatus
21.3.1.1 Conical flask
21.3.1.2 Mechanical shaker
21.3.1.3 Means of controlling the temperature of the flask and contents
21.3.2 Reagents
21.3.2.1 Benzyl alcohol
21.3.2.2 Ethanol
21.4 Test procedure
21.5 Calculation and expression of results
21.6 Precision
22 Method 6. Binary mixtures of triacetate and certain other fibres (method using dichloromethane)
22.1 General
22.2 Principle
22.3 Apparatus and reagents
22.3.1 Apparatus
22.3.1.1 Conical flask
22.3.2 Reagent
22.3.2.1 Dichloromethane (methylene chloride)
22.4 Test procedure
22.5 Calculation and expression of results
22.6 Precision
23 Method 7. Binary mixtures of certain cellulose fibres and polyester (method using sulphuric acid 75 % m/m)
23.1 General
23.2 Principle
23.3 Apparatus and reagents
23.3.1 Apparatus
23.3.1.1 Conical flask
23.3.1.2 Means of controlling the temperature of the flask and contents
23.3.2 Reagents
23.3.2.1 Sulphuric acid solution
23.3.2.2 Dilute ammonia solution
23.4 Test procedure
23.5 Calculation and expression of results
23.6 Precision
24 Method 8. Binary mixtures of acrylics, certain modacrylics or certain chlorofibres and certain other fibres (method using dimethylformamide)
24.1 General
24.2 Principle
24.3 Apparatus and reagent
24.3.1 Apparatus
24.3.1.1 Conical flask
24.3.1.2 Water bath
24.3.2 Reagent
24.3.2.1 Dimethylformamide
24.4 Test procedure
24.5 Calculation and expression of results
24.6 Precision
25 Method 9. Binary mixtures of certain chlorofibres and certain other fibres (method using carbon disulphide/acetone 55.5/44.5)
25.1 General
25.2 Principle
25.3 Apparatus and reagents
25.3.1 Apparatus
25.3.1.1 Conical flask
25.3.1.2 Mechanical shaker
25.3.1.3 Small watch glass
25.3.2 Reagents
25.3.2.1
25.3.2.2 Ethanol
25.4 Test procedure
25.5 Calculation and expression of results
25.6 Precision
26 Method 10. Binary mixtures of acetate and certain chlorofibres (method using glacial acetic acid)
26.1 General
26.2 Principle
26.3 Apparatus and reagent
26.3.1 Apparatus
26.3.1.1 Conical flask
26.3.1.2 Mechanical shaker
26.3.2 Reagent
26.3.2.1 Glacial acetic acid
26.4 Test procedure
26.5 Calculation and expression of results
26.6 Precision
27 Method 11. Binary mixtures of silk and wool or hair (method using sulphuric acid 75 % m/m)
27.1 General
27.2 Principle
27.3 Apparatus and reagents
27.3.1 Apparatus
27.3.1.1 Conical flask
27.3.2 Reagents
27.3.2.1 Sulphuric acid solution
27.3.2.2 Sulphuric acid, dilute solution
27.3.2.3 Dilute ammonia solution
27.4 Test procedure
27.5 Calculation and expression of results
27.6 Precision
28 Method 12. Deleted
29 Method 13. Binary mixtures of jute and certain animal fibres (method of determining the nitrogen content)
29.1 General
29.2 Principle
29.3 Apparatus and reagents
29.3.1 Apparatus
29.3.1.1 Kjeldahl digestion flask
29.3.1.2 Kjeldahl distillation apparatus with steam injection
29.3.1.3 Titration apparatus
29.3.1.4 One-mark volumetric flask
29.3.1.5 Conical flask
29.3.2 Reagents
29.3.2.1 Toluene
29.3.2.2 Methanol
29.3.2.3 Sulphuric acid
29.3.2.4 Potassium sulphate
29.3.2.5 Selenium dioxide
29.3.2.6 Sodium hydroxide solution 400 g/L
29.3.2.7 Mixed indicator
29.3.2.8 Boric acid solution
29.3.2.9 Sulphuric acid
29.4 Test sample
29.5 Pretreatment of sample
29.6 Test procedure
29.6.1 General instructions
29.6.2 Detailed procedure
29.7 Calculation and expression of results
29.7.1
29.7.2
30 Method 14. Binary mixtures of flax and viscose (method using sulphuric acid)
30.1 General
30.2 Principle
30.3 Apparatus and reagents
30.3.1 Apparatus
30.3.1.1 Flask
30.3.1.2 Glass-stoppered flask
30.3.1.3 Mechanical shaker
30.3.2 Reagents
30.3.2.1 Dilute hydrochloric acid solution
30.3.2.2 Dilute ammonia solution
30.3.2.3 Sulphuric acid 60 % m/m
30.4 Additional pretreatment of sample
30.5 Test procedure
30.6 Calculation and expression of results
31 Method 15. Binary mixtures of polypropylene and certain other fibres (method using xylene)
31.1 General
31.2 Principle
31.3 Apparatus and reagents
31.3.1 Apparatus
31.3.1.1 Conical flask
31.3.1.2 Reflux condenser
31.3.2 Rea gent
31.3.2.1 Xylene
31.4 Test procedure
31.5 Calculation and expression of results
31.6 Precision
32 Method 16. Binary mixtures of chlorofibres (homopolymers of vinyl chloride) and certain other fibres (method using concentrated sulphuric acid)
32.1 General
32.2 Principle
32.3 Apparatus and reagents
32.3.1 Apparatus
32.3.1.1 Conical flask
32.3.1.2 Glass rod
32.3.2 Reagents
32.3.2.1 Sulphuric acid
32.3.2.2 Sulphuric acid
32.3.2.3 Ammonia dilute solution
32.4 Test procedure
32.5 Calculation and expression of results
32.6 Precision
33 Method 17. Binary mixtures of asbestos and certain fibres (method based on heating to 450 °C)
33.1 General
33.2 Principle
33.3 Apparatus
33.3.1 Electric furnace
33.3.2 Silica or metal crucible
33.4 Sampling
33.5 Test procedure
33.5.1 General instructions
33.5.2 Detailed procedure
33.6 Calculation and expression of results
34 Method 18. Binary mixtures of chlorofibres, certain modacrylics, certain elastanes, acetates, triacetates and certain other fibres (method using cyclohexanone)
34.1 General
34.2 Principle
34.3 Apparatus and reagents
34.3.1 Apparatus
34.3.1.1 Hot extraction apparatus (see Figure 1)
34.3.1.2 Filter crucible
34.3.1.3 Porous baffle
34.3.1.4 Reflux condenser
34.3.1.5 Source of heat
34.3.2 Reagents
34.3.2.1 Cyclohexanone
34.3.2.2 Ethanol, 50 % V/V
34.4 Procedure
34.5 Calculation and expression of results
34.6 Precision
Appendix A
Appendix B
Appendix ZZ
ZZ1 Introduction
ZZ2 Variations
Cited references in this standard
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