GB/T 14459-2026 Sampling inspection rules by attributes for precious metal adornment English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB/T 14459-2026
Sampling inspection rules by attributes for precious metal adornment
贵金属饰品计数抽样检验规则
Issue date: 2026-04-30 Implementation date: 2026-10-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols and Abbreviations
5 Sampling Inspection Procedures
5.1 Inspection Samples and Sample Units
5.2 Composition of Inspection Lots
5.3 Classification of Quality Characteristics
5.4 Sampling Scheme
5.5 Sample Selection Method
5.6 Basis for Sampling Inspection
6 Post Inspection Disposition
6.1 Post Disposition of Lot by Lot Inspection
6.2 Post Disposition of Periodic Inspection
6.3 Post Disposition of Quality Audit Inspection
Bibliography
Sampling inspection rules by attributes for precious metal adornments
1 Scope
This document specifies the sampling inspection rules by attributes for precious metal adornments.
This document applies to lot by lot sampling inspection by attributes during the production and sale of precious metal adornments, as well as to periodic sampling inspection by attributes and quality audit sampling inspection by attributes for precious metal adornments.
2 Normative References
The following documents are essential for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2828.1 Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot by lot inspection
GB/T 2828.4 Sampling procedures for inspection by attributes — Part 4: Procedures for assessment of declared quality levels
GB/T 2828.11 Sampling procedures for inspection by attributes — Part 11: Procedures for assessment of declared quality levels for small populations
GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (applicable to inspection of process stability)
GB 11887 Jewellery — Regulation of purity of precious metals and nomenclature
GB/T 16306 Procedures for assessment of declared quality levels in re-inspection and re-test
GB 28480 Jewellery — Safety technical requirements
GB/T 31912 Jewellery — Marking
QB/T 1690 Specification for allowable error of mass measurement of precious metal adornments
QB/T 2062 Precious metal adornments
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 test sample
A portion of material taken from a tested sample for the determination of a particular quality characteristic.
3.2 precious metal adornment
An adornment made of precious metals (gold, silver, platinum, palladium) and their alloys.
3.3 sampling inspection by attributes
Inspection whereby either the unit of product is classified simply as conforming or non conforming, or the number of non conformities in the unit of product is counted, with respect to a specified requirement or set of requirements.
NOTE 1: Sampling inspection by attributes includes both the inspection of whether the product is conforming and the inspection of the number of non conformities per 100 units of product.
NOTE 2: The number of non conformities per 100 units of product is the total number of non conformities in all units of the lot divided by the lot size, multiplied by 100. That is:
(Total number of non conformities in the lot / Lot size) × 100.
[Source: GB/T 2828.1-2012, 3.1.3]
3.4 lot by lot inspection
Inspection carried out on each lot of a series of lots.
3.5 periodic inspection
Inspection carried out to determine whether the stability of a production process over a specified period (specified by time or by the number of product units manufactured) meets the specified requirements, by drawing samples from one or more lots that have passed lot by lot inspection.
[Source: GB/T 2829-2025, 3.1.19]
3.6 audit sampling inspection
Sampling inspection carried out independently by the auditing party on a population of products that has been accepted after inspection, to determine whether the audited population is acceptable.
3.7 sampling plan
A combination of the sample size to be used and the associated lot acceptance criteria.
3.8 single sampling plan
A sampling plan consisting of the sample size combined with the decision array [Ac, Re].
[Source: GB/T 2829-2025, 3.1.27]
3.9 item
A basic unit for the purpose of implementing sampling inspection.
EXAMPLE: A single product, a pair of products, a set of products, a component, or a specified length, area, volume or mass of product. It may or may not be the same as the unit of product specified for procurement, sale, production or shipment.
3.10 lot
A definable quantity of a product, material or service accumulated under conditions that are considered uniform.
[Source: GB/T 2829-2025, 3.1.2]
3.11 lot size
The number of items in a lot.
[Source: GB/T 2829-2025, 3.1.3]
3.12 sample
A group of items drawn from a lot that is intended to provide information about the lot.
[Source: GB/T 2828.1-2012, 3.1.15]
3.13 sample unit
An item selected from a lot for inspection.
[Source: GB/T 2829-2025, 3.1.4]
3.14 sample size
The number of sample units in a sample.
[Source: GB/T 3358.2-2009, 1.2.26, modified]
3.15 audit population
The entire set of items subject to audit.
[Source: GB/T 2828.11-2008, 3.1.4]
3.16 non conformity
The failure of a quality characteristic of an item to meet specified requirements.
NOTE 1: According to the importance of the quality characteristic of the item or the severity of the non conformity, non conformities are generally classified as Class A non conformities, Class B non conformities and Class C non conformities.
NOTE 2: A Class A non conformity is a non conformity of a critically important quality characteristic of an item, or a very serious non conformity of a quality characteristic of an item.
NOTE 3: A Class B non conformity is a non conformity of an important quality characteristic of an item, or a serious non conformity of a quality characteristic of an item.
NOTE 4: A Class C non conformity is a non conformity of a general quality characteristic of an item, or a slight non conformity of a quality characteristic of an item.
[Source: GB/T 2829-2025, 3.1.7, modified]
3.17 non conforming item
An item that has one or more non conformities.
NOTE: According to the type of non conformity, non conforming items are generally classified as Class A non conforming items, Class B non conforming items and Class C non conforming items.
[Source: GB/T 2829-2025, 3.1.11]
Standard
GB/T 14459-2026 Sampling inspection rules by attributes for precious metal adornment (English Version)
Standard No.
GB/T 14459-2026
Status
to be valid
Language
English
File Format
PDF
Word Count
10500 words
Price(USD)
315.0
Implemented on
2026-11-1
Delivery
via email in 1~5 business day
Detail of GB/T 14459-2026
Standard No.
GB/T 14459-2026
English Name
Sampling inspection rules by attributes for precious metal adornment
GB/T 14459-2026 Sampling inspection rules by attributes for precious metal adornment English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS
CCS
National Standard of the People's Republic of China
GB/T 14459-2026
Sampling inspection rules by attributes for precious metal adornment
贵金属饰品计数抽样检验规则
Issue date: 2026-04-30 Implementation date: 2026-10-01
Issued by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
the Standardization Administration of the People's Republic of China
Contents
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Symbols and Abbreviations
5 Sampling Inspection Procedures
5.1 Inspection Samples and Sample Units
5.2 Composition of Inspection Lots
5.3 Classification of Quality Characteristics
5.4 Sampling Scheme
5.5 Sample Selection Method
5.6 Basis for Sampling Inspection
6 Post Inspection Disposition
6.1 Post Disposition of Lot by Lot Inspection
6.2 Post Disposition of Periodic Inspection
6.3 Post Disposition of Quality Audit Inspection
Bibliography
Sampling inspection rules by attributes for precious metal adornments
1 Scope
This document specifies the sampling inspection rules by attributes for precious metal adornments.
This document applies to lot by lot sampling inspection by attributes during the production and sale of precious metal adornments, as well as to periodic sampling inspection by attributes and quality audit sampling inspection by attributes for precious metal adornments.
2 Normative References
The following documents are essential for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2828.1 Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot by lot inspection
GB/T 2828.4 Sampling procedures for inspection by attributes — Part 4: Procedures for assessment of declared quality levels
GB/T 2828.11 Sampling procedures for inspection by attributes — Part 11: Procedures for assessment of declared quality levels for small populations
GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (applicable to inspection of process stability)
GB 11887 Jewellery — Regulation of purity of precious metals and nomenclature
GB/T 16306 Procedures for assessment of declared quality levels in re-inspection and re-test
GB 28480 Jewellery — Safety technical requirements
GB/T 31912 Jewellery — Marking
QB/T 1690 Specification for allowable error of mass measurement of precious metal adornments
QB/T 2062 Precious metal adornments
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 test sample
A portion of material taken from a tested sample for the determination of a particular quality characteristic.
3.2 precious metal adornment
An adornment made of precious metals (gold, silver, platinum, palladium) and their alloys.
3.3 sampling inspection by attributes
Inspection whereby either the unit of product is classified simply as conforming or non conforming, or the number of non conformities in the unit of product is counted, with respect to a specified requirement or set of requirements.
NOTE 1: Sampling inspection by attributes includes both the inspection of whether the product is conforming and the inspection of the number of non conformities per 100 units of product.
NOTE 2: The number of non conformities per 100 units of product is the total number of non conformities in all units of the lot divided by the lot size, multiplied by 100. That is:
(Total number of non conformities in the lot / Lot size) × 100.
[Source: GB/T 2828.1-2012, 3.1.3]
3.4 lot by lot inspection
Inspection carried out on each lot of a series of lots.
3.5 periodic inspection
Inspection carried out to determine whether the stability of a production process over a specified period (specified by time or by the number of product units manufactured) meets the specified requirements, by drawing samples from one or more lots that have passed lot by lot inspection.
[Source: GB/T 2829-2025, 3.1.19]
3.6 audit sampling inspection
Sampling inspection carried out independently by the auditing party on a population of products that has been accepted after inspection, to determine whether the audited population is acceptable.
3.7 sampling plan
A combination of the sample size to be used and the associated lot acceptance criteria.
3.8 single sampling plan
A sampling plan consisting of the sample size combined with the decision array [Ac, Re].
[Source: GB/T 2829-2025, 3.1.27]
3.9 item
A basic unit for the purpose of implementing sampling inspection.
EXAMPLE: A single product, a pair of products, a set of products, a component, or a specified length, area, volume or mass of product. It may or may not be the same as the unit of product specified for procurement, sale, production or shipment.
3.10 lot
A definable quantity of a product, material or service accumulated under conditions that are considered uniform.
[Source: GB/T 2829-2025, 3.1.2]
3.11 lot size
The number of items in a lot.
[Source: GB/T 2829-2025, 3.1.3]
3.12 sample
A group of items drawn from a lot that is intended to provide information about the lot.
[Source: GB/T 2828.1-2012, 3.1.15]
3.13 sample unit
An item selected from a lot for inspection.
[Source: GB/T 2829-2025, 3.1.4]
3.14 sample size
The number of sample units in a sample.
[Source: GB/T 3358.2-2009, 1.2.26, modified]
3.15 audit population
The entire set of items subject to audit.
[Source: GB/T 2828.11-2008, 3.1.4]
3.16 non conformity
The failure of a quality characteristic of an item to meet specified requirements.
NOTE 1: According to the importance of the quality characteristic of the item or the severity of the non conformity, non conformities are generally classified as Class A non conformities, Class B non conformities and Class C non conformities.
NOTE 2: A Class A non conformity is a non conformity of a critically important quality characteristic of an item, or a very serious non conformity of a quality characteristic of an item.
NOTE 3: A Class B non conformity is a non conformity of an important quality characteristic of an item, or a serious non conformity of a quality characteristic of an item.
NOTE 4: A Class C non conformity is a non conformity of a general quality characteristic of an item, or a slight non conformity of a quality characteristic of an item.
[Source: GB/T 2829-2025, 3.1.7, modified]
3.17 non conforming item
An item that has one or more non conformities.
NOTE: According to the type of non conformity, non conforming items are generally classified as Class A non conforming items, Class B non conforming items and Class C non conforming items.
[Source: GB/T 2829-2025, 3.1.11]
