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GB/T 44476-2024Hair products—Test method for qualitative analysis of human hair—Near infrared spectroscopy method (English PDF)

发制品人发鉴别方法近红外光谱法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 26, 2024

Implementation date

February 1, 2025

Scope

GB/T 44476-2024 is the English-translated version of 发制品人发鉴别方法近红外光谱法.

GB/T 44476-2024 is the Chinese national standard covering the wigs and hairpieces sold as human hair, told apart from animal hair by near-infrared spectroscopy — the qualitative identification and the fibre content of two-component mixtures from 5.0 % to 95.0 % human hair, the calibration and the validation samples, the reference values a reference method supplies for them, and the discriminant rate that says how often the model gets the identification right and so how far a result can be trusted. First edition, under the China National Light Industry Council. In force from 1 February 2025. Issued on 26 October 2024, it has been in force since 1 February 2025.

Document preview — GB/T 44476-2024

National Standard of the People's Republic of China

ICS: 59.080.99
Classification: W 59

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
3.1 hair fiber
3.2 calibration samples
3.3 validation samples
3.4 reference values
3.5 discriminant rate

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents". Drafting is required.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by the China Light Industry Federation.

This document is under the jurisdiction of the National Technical Committee for Standardization of Hair Products (SAC/TC 304).

This document was drafted by: Shanghai Quality Supervision and Inspection Technology Research Institute, Henan Rebecca Hair Products Co., Ltd., Anhui Difa Hair Products Co., Ltd.

Products Co., Ltd., Henan Ruimei Real Hair Co., Ltd., Qingdao Haisenlin Hair Products Group Co., Ltd., Henan Province Measurement Standards and Product Quality Inspection and Testing Center, Jifa Group Co., Ltd., Qingdao Jiumei Hair Products Co., Ltd., Henan Fiber Textile Product Quality Monitoring Inspection Institute, Donghua University, Xuchang Product Quality Inspection and Research Center, Qingdao Product Quality Inspection Institute, Zhongyuan University of Technology college.

The main drafters of this document are: Jia Kaikai, Zhou Zhaoyi, Huang Yijing, Shen Yueming, Zhang Tianyou, Wang Huizhen, Han Peng, Li Jinling, Sun Luzheng, Chen Weizhe, Zhan Bo, Zhang Weiqiang, Li Weidong, Xu Hong, Kong Baoyun, Meng Qinglei, Han Wenxuan, Hua Mingli, Huang Shuiping, Zhou Lijuan, Zou Wenjing, Yu Jia, and Chai Jinyan.

Identification methods of human hair products Near-infrared spectroscopy

1 Scope

This document describes a method for the qualitative identification of human hair and for the determination of fiber content in two-component mixtures of human and animal hair using near-infrared spectroscopy.

This document applies to pure human hair and mixtures of human hair and animal hair with a human hair content ranging from 5.0% to 95.0%.

2 Normative references

GB/T 2910

GB/T 29858-2013

GB/T 37969-2019

3 Terms and Definitions

The terms and definitions defined in GB/T 29858-2013, GB/T 37969-2019 and the following apply to this document.

3.1 hair fiber

Human or animal hair.

3.2 calibration samples

The sample used to establish the calibration model has known component concentration or property data.

[Source. GB/T 29858-2013, 3.3]

3.3 validation samples

Samples used to verify model performance, whose component concentrations or property data are known.

[Source. GB/T 29858-2013, 3.6]

3.4 reference values

The concentration or property of a component in a calibration or verification sample determined using a reference method.

[Source. GB/T 29858-2013, 3.9]

3.5 discriminant rate

The percentage of correct samples identified by the qualitative model to the total number of validation samples is used to evaluate the model in qualitative analysis.

Actual discrimination ability.

[Source. GB/T 37969-2019, 3.8, modified]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 37969-2019Standard guidelines for near infrared qualitative analysis

GB/T 2910 · GB/T 29858-2013

Editions of GB/T 44476

Edition	Title	Revision	Status
GB/T 44476-2024	Hair products - Test method for qualitative analysis of human hair - Near infrared spectroscopy method	current edition	Current

This page sells the current edition, GB/T 44476-2024. Earlier editions are listed for reference only.

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