1 Scope
This standard specifies the method of detergent detergency evaluation by detergency test with artificial test cloths and detergent anti-soil-redeposition property evaluation by comparing cycle washing with unsoiled cotton cloth.
This standard is applicable to the detergency and anti-soil-redeposition property evaluation for laundry detergents products.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) referred to applies.
GB/T 210.1-2004 Specification and determination methods of sodium carbonate for industrial use-Part 1: sodium carbonate for industrial use
GB/T 4209-2008 Sodium carbonate for industrial use
GB/T 6009-2014 Anhydrous sodium sulfate for industrial use
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T 25812 Standard bleached cotton fabric use for dyeing test
HG/T 3268-2002 Triethanolamine for industrial use
JJG 512 Whiteness meter
QB/T 1806-1993 Alkaline proteinase for detergent
QB/T 5481-2019 Detergent builder-Sodium polyacrylate
Pharmacopoeia of the People's Republic of China (Edition 2005)
3 Terms and Definitions, Symbols and Codes
3. 1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
test cloths
they refer to the artificially-soiled cloth pieces, made of white cloths with specified types of stain through certain treatment procedures, used for determining the detergency of detergent
Note: The types of test cloths are determined by the types of stains.
3.1.2
pieces of test cloths
they refer to blocks of test cloths, cut into a certain size round or square as required, used in the detergency test
3.1.3
whiteness index
it refers to the reflectivity of test cloths or test cloth pieces to light wave under the specified wave length, read at 457 nm with a whiteness meter
3.1.4
whiteness index before washing
it refers to the whiteness index of pieces of test cloths before washing with detergent
3.1.5
whiteness index after washing
it refers to the whiteness index of pieces of test cloths after washing with detergent
3.1.6
difference of the whiteness index
it refers to the difference between whiteness index after washing and whiteness index before washing
3.1.7
detergency
it refers to stain-removing ability of a detergent
Note: It is one of the indexes representing the washing property of detergent.
3.1.8
value of detergency
it refers to the digitization representation of detergent detergency
Note: It is represented by difference of the whiteness index.
3.1.9
rate of the value of detergency
it refers to the rate of sample detergent detergency value to reference detergent detergency value
3.1.10
anti-soil-redeposition property
it refers to the ability to inhibit stain in the detergent suspension water from being absorbed on the surface of fabric during the washing process
Foreword III
Introduction IV
1 Scope
2 Normative references
3 Terms and Definitions, Symbols and Codes
4 Test Principle
5 Reagents and Materials
6 Instruments and Equipment
7 Test Procedure
8 Result Calculation and Judgment
9 Test Report
Annex A (Normative) Types and Preparation of JB Series Test Cloth
Annex B (Normative) Types and Preparation Requirements of Reference Detergent
Annex C (Normative) Technical Parameters of Rinse Controller
Annex D (Informative) Q Value Inspection Method
Annex E (Normative) Inspection and Determination for Tested Rate of the Value of Detergency
Bibliography
1 Scope
This standard specifies the method of detergent detergency evaluation by detergency test with artificial test cloths and detergent anti-soil-redeposition property evaluation by comparing cycle washing with unsoiled cotton cloth.
This standard is applicable to the detergency and anti-soil-redeposition property evaluation for laundry detergents products.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) referred to applies.
GB/T 210.1-2004 Specification and determination methods of sodium carbonate for industrial use-Part 1: sodium carbonate for industrial use
GB/T 4209-2008 Sodium carbonate for industrial use
GB/T 6009-2014 Anhydrous sodium sulfate for industrial use
GB/T 6682 Water for analytical laboratory use - Specification and test methods
GB/T 25812 Standard bleached cotton fabric use for dyeing test
HG/T 3268-2002 Triethanolamine for industrial use
JJG 512 Whiteness meter
QB/T 1806-1993 Alkaline proteinase for detergent
QB/T 5481-2019 Detergent builder-Sodium polyacrylate
Pharmacopoeia of the People's Republic of China (Edition 2005)
3 Terms and Definitions, Symbols and Codes
3. 1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
test cloths
they refer to the artificially-soiled cloth pieces, made of white cloths with specified types of stain through certain treatment procedures, used for determining the detergency of detergent
Note: The types of test cloths are determined by the types of stains.
3.1.2
pieces of test cloths
they refer to blocks of test cloths, cut into a certain size round or square as required, used in the detergency test
3.1.3
whiteness index
it refers to the reflectivity of test cloths or test cloth pieces to light wave under the specified wave length, read at 457 nm with a whiteness meter
3.1.4
whiteness index before washing
it refers to the whiteness index of pieces of test cloths before washing with detergent
3.1.5
whiteness index after washing
it refers to the whiteness index of pieces of test cloths after washing with detergent
3.1.6
difference of the whiteness index
it refers to the difference between whiteness index after washing and whiteness index before washing
3.1.7
detergency
it refers to stain-removing ability of a detergent
Note: It is one of the indexes representing the washing property of detergent.
3.1.8
value of detergency
it refers to the digitization representation of detergent detergency
Note: It is represented by difference of the whiteness index.
3.1.9
rate of the value of detergency
it refers to the rate of sample detergent detergency value to reference detergent detergency value
3.1.10
anti-soil-redeposition property
it refers to the ability to inhibit stain in the detergent suspension water from being absorbed on the surface of fabric during the washing process
Contents of GB/T 13174-2021
Foreword III
Introduction IV
1 Scope
2 Normative references
3 Terms and Definitions, Symbols and Codes
4 Test Principle
5 Reagents and Materials
6 Instruments and Equipment
7 Test Procedure
8 Result Calculation and Judgment
9 Test Report
Annex A (Normative) Types and Preparation of JB Series Test Cloth
Annex B (Normative) Types and Preparation Requirements of Reference Detergent
Annex C (Normative) Technical Parameters of Rinse Controller
Annex D (Informative) Q Value Inspection Method
Annex E (Normative) Inspection and Determination for Tested Rate of the Value of Detergency
Bibliography
