SN/T 1523-2005 English PDF

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SN/T 1523-2005: Textiles. Determination of pH value on the surface
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1523-2005	199	Add to Cart	3 days	Textiles. Determination of pH value on the surface	Valid

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Basic data

Standard ID: SN/T 1523-2005 (SN/T1523-2005)
Description (Translated English): Textiles. Determination of pH value on the surface
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: W04
Classification of International Standard: 59.080.01
Word Count Estimation: 6,656
Date of Issue: 2005-02-17
Date of Implementation: 2005-07-01
Quoted Standard: GB/T 8170
Regulation (derived from): Industry standard filing Notice 2005 No. 4 (No. 64 overall)
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary: This standard specifies the textile surface pH value determination method. This standard method is suitable for surface pH values ??range from 3. 0 to 11. 0 textiles, not intended for water-repellent treatment of textiles.

SN/T 1523-2005: Textiles. Determination of pH value on the surface

---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.
Textiles.Determination of pH value on the surface Book of the People's Republic of China Entry and Exit Inspection and Quarantine Released on.2005-02-17 2005-07-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

Appendix A of this standard is a normative appendix. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted by the Shenzhen Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Liu Caiming, Li Lixia, Yan Naiqing, Tang Lichun. This standard is the first industry standard for entry-exit inspection and quarantine.

1 Scope

This standard specifies the method for determining the pH value of textile surfaces. This standard method is applicable to textiles with a surface pH in the range of 3.0 to 11.0; it is not suitable for textiles treated with water repellent.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard. GB/T 8170 digital rounding rules

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 The pH measured by contacting the flat electrode of the pH meter with the surface of the textile wetted by deionized water.

4 Principle

At room temperature, a certain amount of deionized water is added to the surface of the textile to make it wet and permeable in the textile, with flat glass The pH meter of the electrode is such that the flat end of the electrode is in contact with the surface of the wetted textile and the pH of the textile is determined.

5 reagents

5.1 Deionized water. When the temperature is 20 °C ± 2 °C, the pH value is in the range of 5.0 to 7.0. 5.2 Buffer solution. The pH value should be close to the pH value of the sample to be tested. Before the measurement, it is used to calibrate the pH meter. The following solutions are available. a) 0.05mol/L potassium hydrogen phthalate solution (HOOC·C6H4COOK) pH=4.000 at 15 °C pH=4.001 at 20 °C pH=4.005 at 25°C pH=4.011 at 30 °C pH=4.020 at 35 °C pH = 4.030 at 40 ° C b) 0.05mol/L mixed phosphate (RPO4) pH = 7.04 at 15 ° C pH=7.02 at 20 °C pH=7.00 at 25°C pH = 6.99 at 30 ° C pH = 6.98 at 35 ° C pH = 6.97 at 40 ° C c) 0.05 mol/L sodium tetraborate solution (Na2B4O7·10H2O) pH = 9.33 at 15 ° C ......

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