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Position: Chinese Standard in English/GB/T 7573-2025
GB/T 7573-2025   Textiles―Determination of pH of aqueous extract (English Version)
Standard No.: GB/T 7573-2025 Status:to be valid remind me the status change

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Language:English File Format:PDF
Word Count: 5500 words Price(USD):165.0 remind me the price change

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Implemented on:2027-3-1 Delivery: via email in 1 business day
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Standard No.: GB/T 7573-2025
English Name: Textiles―Determination of pH of aqueous extract
Chinese Name: 纺织品水萃取液pH值的测定
Professional Classification: GB    National Standard
Issued by: SAMR; SAC
Issued on: 2025-02-28
Implemented on: 2027-3-1
Status: to be valid
Superseding:GB/T 7573-2009 Textiles—Determination of pH of aqueous extract
Language: English
File Format: PDF
Word Count: 5500 words
Price(USD): 165.0
Delivery: via email in 1 business day
GB/T 7573-2025 Textiles - Determination of pH of aqueous extract 1 Scope This document describes the methods for determination of pH of aqueous extract for textiles. This document is applicable to all kinds of textile products (e.g., fillings such as fibers, yarns, fabrics, down, etc.). 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 6682 Water for analytical laboratory use - Specification and test methods (GB/T 6682-2008, ISO 3696:1987, MOD) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 pH value negative logarithm of hydrogen ion concentration in aqueous extract 4 Principle Determine the pH value of the aqueous extract for textile at room temperature by a pH meter with a glass electrode. 5 Reagents All reagents are analytically pure. 5.1 Distilled water or deionized water, which at least meets the requirements for Grade III in GB/T 6682, and its pH value is between 5.0 and 7.5. The pH value of the water shall be checked before the first use. If the pH value is not within the specified range, re-distillation shall be conducted by chemically stable glassware. The acid or organic material may be removed by distillation of 1 g/L potassium permanganate and 4 g/L sodium hydroxide solution. The alkali (e.g. in the presence of ammonia) may be removed by distillation of dilute sulfuric acid. If the distilled water is not Grade III water, the distilled water may be boiled in a beaker at an appropriate rate for (10 ± 1) min and cooled to room temperature with the lid covered.
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents 6 Apparatus 7 Preparation of specimen 8 Determination steps 9 Calculation and expression of results 10 Accuracy 11 Test report Annex A (Informative) Preparation of standard buffer solutions Bibliography
Referred in GB/T 7573-2025:
*GB/T 6682-2008 Water for analytical laboratory use - Specification and test methods
GB/T 7573-2025 is referred in:
*GB/T 45273-2025 Juvenile products―General technical requirements for toilet utensils
*GB/T 24345-2025 Corn dyed yarns
*GB/T 45041-2024 Wool and wool-like knitting goods for infants
Code of China
Standard
GB/T 7573-2025  Textiles―Determination of pH of aqueous extract (English Version)
Standard No.GB/T 7573-2025
Statusto be valid
LanguageEnglish
File FormatPDF
Word Count5500 words
Price(USD)165.0
Implemented on2027-3-1
Deliveryvia email in 1 business day
Detail of GB/T 7573-2025
Standard No.
GB/T 7573-2025
English Name
Textiles―Determination of pH of aqueous extract
Chinese Name
纺织品水萃取液pH值的测定
Chinese Classification
Professional Classification
GB
ICS Classification
Issued by
SAMR; SAC
Issued on
2025-02-28
Implemented on
2027-3-1
Status
to be valid
Superseded by
Superseded on
Abolished on
Superseding
GB/T 7573-2009 Textiles—Determination of pH of aqueous extract
Language
English
File Format
PDF
Word Count
5500 words
Price(USD)
165.0
Keywords
GB/T 7573-2025, GB 7573-2025, GBT 7573-2025, GB/T7573-2025, GB/T 7573, GB/T7573, GB7573-2025, GB 7573, GB7573, GBT7573-2025, GBT 7573, GBT7573
Introduction of GB/T 7573-2025
GB/T 7573-2025 Textiles - Determination of pH of aqueous extract 1 Scope This document describes the methods for determination of pH of aqueous extract for textiles. This document is applicable to all kinds of textile products (e.g., fillings such as fibers, yarns, fabrics, down, etc.). 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 6682 Water for analytical laboratory use - Specification and test methods (GB/T 6682-2008, ISO 3696:1987, MOD) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 pH value negative logarithm of hydrogen ion concentration in aqueous extract 4 Principle Determine the pH value of the aqueous extract for textile at room temperature by a pH meter with a glass electrode. 5 Reagents All reagents are analytically pure. 5.1 Distilled water or deionized water, which at least meets the requirements for Grade III in GB/T 6682, and its pH value is between 5.0 and 7.5. The pH value of the water shall be checked before the first use. If the pH value is not within the specified range, re-distillation shall be conducted by chemically stable glassware. The acid or organic material may be removed by distillation of 1 g/L potassium permanganate and 4 g/L sodium hydroxide solution. The alkali (e.g. in the presence of ammonia) may be removed by distillation of dilute sulfuric acid. If the distilled water is not Grade III water, the distilled water may be boiled in a beaker at an appropriate rate for (10 ± 1) min and cooled to room temperature with the lid covered.
Contents of GB/T 7573-2025
Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Principle 5 Reagents 6 Apparatus 7 Preparation of specimen 8 Determination steps 9 Calculation and expression of results 10 Accuracy 11 Test report Annex A (Informative) Preparation of standard buffer solutions Bibliography
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Keywords:
GB/T 7573-2025, GB 7573-2025, GBT 7573-2025, GB/T7573-2025, GB/T 7573, GB/T7573, GB7573-2025, GB 7573, GB7573, GBT7573-2025, GBT 7573, GBT7573