EN ISO 1833 Textiles - Quantitative Chemical Analysis

The “EN ISO 1833 Textiles - Quantitative chemical analysis” standard, which is based on a European standard and was subsequently published by the International Organization for Standardization (ISO), consists of the following sub-sections published under the same title:

• EN ISO 1833-1 Part 1: General test principles" describes a common method for the quantitative chemical analysis of various fiber blends. This method, and the methods described in other parts of ISO 1833, are generally applicable to fibers in any textile form. Where specific textile forms are excluded, they are listed within the scope of the appropriate section. For the purposes of this standard, the terms and definitions given in ISO 5089 apply. Non-fibrous matter also refers to processing aids or naturally occurring non-fibrous substances, such as lubricants and finishes.
• The standard "EN ISO 1833-2 Part 2: Ternary fibre blends" describes methods for the quantitative analysis of various ternary fibre blends. The scope of application of each method for analysing blends specified in other parts of ISO 1833 specifies the fibres to which the method is applicable. This standard is applicable to fibre blends with more than three components, provided that the combination of test methods results in the case of simple fibre blends. The table provided within the standard shows typical ternary blends and the corresponding parts of the ISO 1833 series that apply to them.
• The standard "EN ISO 1833-3 Part 3: Blends of acetate with certain other fibres (method using acetone)" describes a method using acetone for determining the mass percentage of acetate after removal of non-fibrous matter in textiles made from blends of acetate with wool, animal hair, silk, protein, cotton (scoured, cooked or bleached), flax, hemp, jute, abaca, alpha, coir, broom, ramie, sisal, copper, viscose, modal, polyamide, polyester, polypropylene, acrylic, elastolefin, elastomultiester, melamine, polypropylene/polyamide bicomponent, polyacrylate and glass fibres. It is not applicable to blends containing modacrylic fibres, certain chlorofibres or surface-deacetylated acetate fibres.
• The standard “EN ISO 1833-4 Part 4: Blends of certain protein fibres with certain other fibres (method using hypochlorite)” describes a method using hypochlorite to determine the percentage by mass of protein fibre after removal of non-fibre matter in textiles made from blends of certain non-protein fibres and certain protein fibres.
• The standard "EN ISO 1833-5 Part 5: Blends of viscose, copper or modal and cotton fibres (method using sodium zincate)" describes a method using sodium zincate to determine the percentage of viscose, copper or modal fibres after removal of non-fibrous material in textiles made from binary blends of raw, scoured, cooked or bleached cotton with a majority of viscose or copper or modal fibres present. If copper or modal fibres are present, a preliminary test should be performed to determine their solubility in the reagent. This method is not applicable to blends where the cotton has undergone extensive chemical degradation or where the viscose, copper or modal fibres have been rendered completely insoluble due to the presence of certain permanent finishes or reactive dyes that cannot be completely removed.
• The standard "EN ISO 1833-6 Part 6: Blends of viscose, specified types of copper, modal or lyocell with certain other fibers (Method using formic acid and zinc chloride)" describes a method using a mixture of formic acid and zinc chloride to determine the mass percentage of viscose, specified types of copper, modal or lyocell in textiles made from blends of viscose, specified types of copper, modal or lyocell with cotton, after removal of non-fibrous matter. This standard was initially developed specifically for blends of viscose, specified types of copper, modal or lyocell with cotton, but is also applicable to blends of polypropylene, elastolefin, and melamine.
• The standard "EN ISO 1833-7 Part 7: Blends of polyamide with certain other fibres (method using formic acid)" describes a method using formic acid to determine the percentage by mass of polyamide fibres after removal of non-fibrous matter in textiles made from blends of polyamide with cotton, viscose, copper, modal, lyocell, polyester, polypropylene, chlorofibre, acrylic, glass fibre, elastomultiester, elastolefin and melamine or wool (if the wool content is less than or equal to 25 per cent) or animal hair fibres. This standard does not apply when the wool content exceeds 252 per cent, in which case ISO 1833-4 applies.
• The standard “EN ISO 1833-8 Part 8: Blends of acetate and triacetate fibres (method using acetone)” describes a method using acetone to determine the percentage of acetate after removal of non-fibrous matter in textiles made from binary blends of acetate and triacetate fibres.
• The standard “EN ISO 1833-9 Part 9: Blends of acetate with certain other fibres (method using benzyl alcohol)” describes a method for determining the mass percentage of acetate in textiles made from acetate, triacetate, polypropylene, elastolefin, melamine, polypropylene/polyamide bicomponent and polyacrylate fibre blends, after removal of non-fibrous matter, using benzyl alcohol.
• The standard "EN ISO 1833-10 Part 10: Blends of triacetate or polylactide with certain other fibres (method using dichloromethane)" specifies a method using dichloromethane for determining the mass percentage of triacetate or polylactide in textiles made from blends of triacetate or polylactide with wool or other animal hair, silk, protein, cotton, viscose, copper, modal, lyocell, polyamide, polyester, acrylic, elastomultiester, polypropylene, elastolefin, melamine, polypropylene/polyamide bicomponent, polyacrylate and glass fibres, after removal of non-fibrous matter. Partially hydrolysed (saponified) triacetate fibres become completely insoluble in the reagent. In such cases, this method is not applicable.
• The standard “EN ISO 1833-11 Part 11: Blends of certain cellulose fibres with certain other fibres (method using sulphuric acid)” describes a method using sulphuric acid to determine the mass percentage of cellulose fibres after removal of non-fibrous matter in textiles made from blends of natural and synthetic cellulose fibres such as cotton, linen, hemp, ramie, viscose, copper, modal, lyocell and polyester, polypropylene, elastol ester, elastolefin and polypropylene/polyamide bicomponent.
• The standard "EN ISO 1833-12 Part 12: Blends of acrylic, certain modacrylics, certain chlorofibers, certain elastane fibers with certain other fibers (method using dimethylformamide)" describes a method using dimethylformamide for determining the mass percentage of acrylic, modacrylic, chlorofiber or elastane in textiles made from blends of acrylic, certain modacrylics, certain chlorofibers, certain elastane fibers with wool, animal hair, silk, cotton, viscose, copper, modal, lyocell, polyamide, polyester, polypropylene, elastomultiester, elastolefin, melamine, polypropylene/polyamide bicomponent, polyacrylate or glass fibers, after removal of non-fibrous matter. It is not applicable to animal hair, wool and silk dyed with chromium-based mordant dyes. The dyestuff identification is described in ISO 16373-1.
• The standard "EN ISO 1833-13 Part 13: Blends of certain chlorofibers with certain other fibers (method using carbon disulfide/acetone)" describes a method using carbon disulfide/acetone to determine the mass percentage of chlorofibers after removal of non-fibrous material in textiles made from blends of certain chlorofibers with wool, animal hair, silk, cotton, viscose, copper, modal, lyocell, polyamide, polyester, elastomultiester, acrylic, melamine, polypropylene, polypropylene/polyamide bicomponent, polyacrylate, and glass fibers. It is also possible to analyze blends containing chlorofibers using the test methods described in ISO 1833-17 or ISO 1833-21.
• The standard "EN ISO 1833-14 Part 14: Blends of acetate with certain other fibers (method using glacial acetic acid)" describes a method using glacial acetic acid to determine the mass percentage of acetate in textiles made from blends of acetate with certain chlorofibers or post-chlorinated chlorofibers, after removal of non-fibrous matter. Blends containing acetate can also be analyzed using the test methods described in ISO 1833-3 or ISO 1833-9.
• The standard "EN ISO 1833-15 Part 15: Blends of jute and certain animal fibres (Method for determination of nitrogen content)" describes a method for determining the nitrogen content of textiles made from binary blends of jute and animal fibres after the removal of non-fibrous materials. The animal fibre component may consist solely of hair or wool, or any mixture of the two. This standard does not apply to products in which dyes or finishes contain nitrogen. This method is presented in a complete form, as it differs in principle from the general method based on selective solubility specified in ISO 1833-1.
• The standard “EN ISO 1833-16 Part 16: Blends of polypropylene fibres with certain other fibres (method using xylene)” describes a method for determining the mass percentage of polypropylene after removal of non-fibrous matter in textiles made from blends of polypropylene fibres with wool, animal hair, silk, cotton, viscose, copper, modal, lyocell, acetate, triacetate, polyamide, polyester, acrylic, glass fibres, elastomultiester, melamine and polyacrylate, using xylene.
• The standard "EN ISO 1833-17 Part 17: Blends of cellulose fibres and certain fibres with chlorofibres and certain other fibres (method using concentrated sulphuric acid)" describes a method using concentrated sulphuric acid for determining the percentage by mass of chlorofibres and certain other fibres, after removal of the non-fibrous material, in textiles made from cotton, viscose, copper, modal, lyocell, acetate, triacetate, polyamide, polyester, elastomultiester, certain acrylic and certain modacrylic fibres with chlorofibres (based on homopolymers of vinyl chloride), polypropylene, elastolefin, melamine and polypropylene/polyamide bicomponent blends. The modacrylics concerned are those that give a clear solution when immersed in concentrated sulphuric acid. This method may be used, in particular in place of the methods described in the ISO 1833-12 and ISO 1833-13 standards, in all cases where preliminary testing has shown that chlorofibres are completely insoluble in dimethylformamide or in an azeotropic mixture of carbon disulfide and acetone.
• The standard “EN ISO 1833-18 Part 18: Blends of silk with other protein fibres (method using sulphuric acid)” describes a method using sulphuric acid to determine the mass percentage of silk after removal of non-fibrous matter in textiles made from binary blends of silk with other protein fibres (e.g. wool or animal hair).
• The standard "EN ISO 1833-19 Part 19: Blends of cellulose fibres and asbestos (heating method)" specifies a method for determining the percentage of cellulosic fibres in textiles made from binary blends of cotton or regenerated cellulose with chrysotile and crocidolite asbestos by heating. This method may also be applied to other types of asbestos, subject to agreement between the parties involved. This method differs in principle from the general method based on selective solubility specified in ISO 1833-1.
• The standard "EN ISO 1833-20 Part 20: Blends of elastane with certain other fibers (method using dimethylacetamide)" describes a method using dimethylacetamide to determine the mass percentage of elastane in textiles made from blends of certain elastane fibers with cotton, viscose, cupro, modal, lyocell, polyamide, polyester, or wool fibers after removal of non-fiber materials. This method is not applicable when acrylic fibers are present. Blends containing certain elastane fibers can also be analyzed using the test methods described in ISO 1833-12 or ISO 1833-21.
• The standard "EN ISO 1833-21 Part 21: Blends of chlorofibers, certain modacrylics, certain elastanes, acetates, triacetates with certain other fibers (method using cyclohexanone)" describes a method using cyclohexanone to determine the mass percentage of chlorofiber, modacrylics, elastanes, acetates, and triacetates in textiles made from blends of acetate, triacetate, chlorofibers, certain modacrylics, wool, animal hair, silk, cotton, copper, modal, viscose, lyocell, polyamide, acrylic, melamine, polyacrylate, and glass fibers, after removal of non-fibrous material. It is also possible to analyze blends containing chlorofibers using the test methods described in ISO 1833-13 or ISO 1833-17.
• The standard "EN ISO 1833-22 Part 22: Blends of viscose or certain types of copper or modal or lyocell with flax fibres (method using formic acid and zinc chloride)" describes a method using formic acid and zinc chloride to determine the percentage by mass of viscose or certain types of copper or modal or lyocell fibres after removal of non-fibrous matter in textiles made from blends of viscose or certain types of copper or modal or lyocell fibres with flax fibres. This standard does not apply to blends in which the flax fibres have undergone extensive chemical degradation or to situations where the viscose, copper, modal or lyocell fibres have been rendered completely insoluble by the presence of certain permanent finishes or reactive dyes that cannot be completely removed.
• The standard “EN ISO 1833-23 Part 23: Blends of polyethylene and polypropylene (method using cyclohexanone)” describes a method for determining the percentage of polyethylene in textiles made from binary blends of polyethylene and polypropylene, after removal of non-fibrous matter, using cyclohexanone.
• The standard "EN ISO 1833-24 Part 24: Blends of polyester and certain other fibers (method using phenol and tetrachloroethane)" describes a method using phenol and tetrachloroethane to determine the percentage of polyester after removal of non-fibrous matter in textiles made from binary blends of certain polyester fibers with acrylic, polypropylene, or aramid fibers. This method is not applicable to coated fabrics.
• The standard “EN ISO 1833-25 Part 25: Blends of polyester with certain other fibres (method using trichloroacetic acid and chloroform)” describes a method using trichloroacetic acid and chloroform to determine the percentage by mass of polyester fibres after removal of non-fibrous matter in textiles made from blends of polyester fibre with aramid fibre (excluding polyamide imide), flame retardant (FR) viscose and polyacrylate.
• “EN ISO 1833-26 Part 26: Blends of melamine and cotton or aramid fibres (method using hot formic acid) describes a method using hot formic acid to determine the percentage of melamine fibres after removal of non-fibrous matter in textiles made from binary blends of melamine fibres and cotton or aramid fibres.
• The standard “EN ISO 1833-27 Part 27: Blends of cellulose fibres with certain other fibres (method using aluminium sulphate)” describes a method using aluminium sulphate to determine the mass percentage of cellulose fibres after removal of non-fibrous matter in textiles made from blends of cellulose fibres (natural or regenerated) with polyester, polyamide, acrylic, wool and elastane fibres.
• The standard "EN ISO 1833-28 Part 28: Blends of chitosan with certain other fibers (method using dilute acetic acid)" specifies a method for determining the mass percentage of chitosan fibers in textiles made from blends of chitosan fibers with certain other fibers, after elimination of non-fibrous material, using dilute acetic acid. This method is applicable to blends of chitosan fiber with cellulose fibers (cotton, linen, ramie, viscose, modal, lyocell), protein fibers (wool, cashmere, silk), or synthetic fibers (polyester, polyamide, acrylic).
• The standard “EN ISO 1833-29 Part 29: Polyamide and polypropylene/polyamide bicomponent blends (method using sulphuric acid)” describes a method for determining the mass percentage of polyamide in textiles consisting of binary blends of polyamide and polypropylene/polyamide bicomponent, after removal of non-fibrous matter, using sulphuric acid.

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