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GB/T 13171.2-2022 PDF English

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GB/T 13171.2-2022: Laundry powders - Part 2: Test method
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GB/T 13171.2: Historical versions

Standard IDUSDBUY PDFDeliveryStandard Title (Description)Status
GB/T 13171.2-2022110 Add to Cart Auto, 9 seconds. Laundry powders - Part 2: Test method Valid
GB/T 13171.2-200970 Add to Cart Auto, 9 seconds. Laundry powders (phosphate free) Obsolete

Similar standards

GB/T 13171.1   GB/T 13171.2   GB/T 13174   

GB/T 13171.2-2022: Laundry powders - Part 2: Test method

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT13171.2-2022
NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 71.100.40 CCS Y 43 Replacing GB/T 13171.2-2009 Laundry powders - Part 2: Test method ISSUED ON: JULY 11, 2022 IMPLEMENTED ON: AUGUST 01, 2023 Issued by: State Administration for Market Regulation; Standardization Administration of PRC.

Table of Contents

Foreword ... 3 Introduction ... 5 1 Scope ... 6 2 Normative references ... 6 3 Terms and definitions... 6 4 Test methods ... 7 Laundry powders - Part 2: Test method

1 Scope

This document describes the test methods for the physical-chemical indicators and performance of laundry powders. This document applies to laundry powders, which are produced with surfactants and other additives.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, for dated references, only the version corresponding to the date applies to this document; for undated references, the latest version (including all amendments) is applicable to this document. GB/T 6368 Surface active agents - Determination of pH of aqueous solution - Potentiometric method GB/T 6682 Water for analytical laboratory use - Specification and test methods GB/T 13171.1-2022 Laundry powder - Part 1: Technical requirements GB/T 13173-2021 Surface active agents - Test methods for detergents GB/T 13174 Determination of detergency and cycle of washing property for laundry detergents JJF 1070 Rules of metrological testing for net quantity of products in prepackages with fixed content QB/T 1323 Detergent - Determination of surface tension - Circular ring lifting liquid film method

3 Terms and definitions

There are no terms and definitions, that need to be defined, in this document.

4 Test methods

4.1 General Unless otherwise specified, only reagents confirmed to be analytically pure and grade- 4 or above water conforming to GB/T 6682 are used in the analysis. According to the provisions of Chapter 4 of GB/T 13173-2021, the laboratory samples of laundry powder are reduced. 4.2 Appearance Under indirect light conditions, carry out direct visual observation. Pour the product on the white paper and observe; if there is agglomeration, but the agglomeration is loosened by pressing lightly by hand, it is regarded as qualified. 4.3 Apparent density It is determined, according to the provisions of Chapter 13 of GB/T 13173-2021. 4.4 Total active content It is determined, according to the provisions of Chapter 7 of GB/T 13173-2021. The general inspection is according to method A; the method B is required, when the test result does not include water co-solvent. The content of nonionic surfactant is determined, according to the provisions of Chapter 8 of GB/T 13173-2021. 4.5 Total phosphorus pentoxide content It is determined, according to the phosphomolybdate blue colorimetric method, in Chapter 6 of GB/T 13173-2021. The quinoline phosphomolybdate gravimetric method is used, as the arbitration method for phosphorus-containing laundry powder. 4.6 Free base content It is determined, according to the provisions of Chapter 20 of GB/T 13173-2021. 4.7 pH Prepare the specimen solution, according to the requirements in Chapter 5 of GB/T 13171.1-2022. Weigh 0.1 g or 0.05 g of the specimen, accurate to 0.001 g. Add 100 mL of water. Electromagnetically stir to fully dissolve it. Keep at 25 °C, whilst stirring it gently. Make determination, according to GB/T 6368. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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