GB 44702-2024 Specification for the limitation of harmful substances found in watch casings contacting directly with skin
1 Scope
This document defines the terms and definitions of limitation of harmful substances found in watch casings contacting directly with skin (hereinafter referred to as "watch casings"), specifies requirements, inspection rules, and marking, and describes corresponding test methods.
This document is applicable to watch casings contacting directly with skin made of metal, ceramic, leather, plastic, rubber, synthetic sapphire, inorganic glass, and fiber composite materials.
2 Normative references
The following documents contain requirements 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 6675.4 Safety of toys - Part 4: Migration of certain elements
GB 20400 Leather and fur - Limit of harmful matter
GB/T 22048 Determination of certain phthalate esters in toys and children's products
GB/T 39560.301 Determination of certain substances in electrical and electronic products - Part 3-1: Screening lead, mercury, cadmium, total chromium and total bromine by X-ray fluorescence spectrometry
GB/T 39560.4 Determination of certain substances in electrical and electronic products - Part 4: Mercury in polymers, metals and electronics by CV-AAS, CV-AFS, ICP-OES and ICP-MS
GB/T 39560.5 Determination of certain substances in electrical and electronic products - Part 5: Cadmium, lead and chromium in polymers and electronics and cadmium and lead in metals by AAS, AFS, ICP-OES and ICP-MS
EN 1811 Reference test method for release of nickel from all post assemblies which are inserted into pierced parts of the human body and articles intended to come into direct and prolonged contact with the skin
EN 12472 Method for the simulation of accelerated wear and corrosion for the detection of nickel release from coated items
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
children's watches
watch designed for children aged 3 and above, and 14 and below
[Source: GB/T 41411-2022, 3.1]
4 Requirements
4.1 General requirements
4.1.1 Nickel release
The nickel release limit value for the metal and cermet (including coating) shall be less than 0.5 μg/cm2/week.
4.1.2 Limit of other harmful substances
The watch casings made of leather materials shall meet the requirements of GB 20400, while the limit requirements for harmful substances in the watch casings made of other materials shall meet those specified in Table 1.
Contents
Foreword i
Introduction ii
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Inspection rules
7 Marking
Bibliography
GB 44702-2024 Specification for the limitation of harmful substances found in watch casings contacting directly with skin
1 Scope
This document defines the terms and definitions of limitation of harmful substances found in watch casings contacting directly with skin (hereinafter referred to as "watch casings"), specifies requirements, inspection rules, and marking, and describes corresponding test methods.
This document is applicable to watch casings contacting directly with skin made of metal, ceramic, leather, plastic, rubber, synthetic sapphire, inorganic glass, and fiber composite materials.
2 Normative references
The following documents contain requirements 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 6675.4 Safety of toys - Part 4: Migration of certain elements
GB 20400 Leather and fur - Limit of harmful matter
GB/T 22048 Determination of certain phthalate esters in toys and children's products
GB/T 39560.301 Determination of certain substances in electrical and electronic products - Part 3-1: Screening lead, mercury, cadmium, total chromium and total bromine by X-ray fluorescence spectrometry
GB/T 39560.4 Determination of certain substances in electrical and electronic products - Part 4: Mercury in polymers, metals and electronics by CV-AAS, CV-AFS, ICP-OES and ICP-MS
GB/T 39560.5 Determination of certain substances in electrical and electronic products - Part 5: Cadmium, lead and chromium in polymers and electronics and cadmium and lead in metals by AAS, AFS, ICP-OES and ICP-MS
EN 1811 Reference test method for release of nickel from all post assemblies which are inserted into pierced parts of the human body and articles intended to come into direct and prolonged contact with the skin
EN 12472 Method for the simulation of accelerated wear and corrosion for the detection of nickel release from coated items
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
children's watches
watch designed for children aged 3 and above, and 14 and below
[Source: GB/T 41411-2022, 3.1]
4 Requirements
4.1 General requirements
4.1.1 Nickel release
The nickel release limit value for the metal and cermet (including coating) shall be less than 0.5 μg/cm2/week.
4.1.2 Limit of other harmful substances
The watch casings made of leather materials shall meet the requirements of GB 20400, while the limit requirements for harmful substances in the watch casings made of other materials shall meet those specified in Table 1.
Contents of GB 44702-2024
Contents
Foreword i
Introduction ii
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Inspection rules
7 Marking
Bibliography
