GB/T 8979-2025 Pure nitrogen,high purity nitrogen and ultra pure nitrogen 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 77.140.60
CCS H 59
National Standard of the People's Republic of China
GB/T 8979-2025
Replaces GB/T 8979-2008
Pure nitrogen,high purity nitrogen and ultra pure nitrogen
Issue date: 2025-08-29 Implementation date: 2026-03-01
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 Technical Requirements
5 Sampling
6 Test Methods
7 Inspection rules
8 Marking, Packaging, Transportation, Storage and Safety Information
Pure nitrogen,high purity nitrogen and ultra pure nitrogen
1 Scope
This document specifies the technical requirements, sampling, test methods, inspection rules, marking, packaging, filling, transportation, and storage for pure nitrogen, high-purity nitrogen, and ultra-high-purity nitrogen, and provides safety information for these gases.
This document applies to gaseous and liquid pure nitrogen, high-purity nitrogen, and ultra-high-purity nitrogen obtained by separation from air or through purification processes.
2 Normative References
The following referenced documents contain provisions that are indispensable for this document through normative citations. For dated references, only the edition cited applies. For undated references, the latest version (including any amendments) applies.
GB 190 Marking for dangerous goods packages
GB/T 3864 Industrial nitrogen
GB/T 5099 (all parts) seamless steel gas cylinders
GB/T 5832.2 Gas analysis—Determination of trace moisture—Part 2: Dew-point method
GB/T 5832.3 Gas analysis—Determination of trace moisture—Part 3: Cavity ring-down spectroscopy
GB/T 6285 Determination of trace oxygen in gases—Electrochemical method
GB/T 7144 Color marking for gas cylinders
GB/T 8170 Rules for rounding off numerical values and representation and judgment of limiting values
GB/T 11640 Seamless aluminum alloy gas cylinders
GB/T 14194 Filling regulations for compressed gas cylinders
GB 15258 General rules for preparation of chemical safety labels
GB/T 16804 Warning labels for gas cylinders
GB/T 24159 Welded insulated gas cylinders
GB/T 28726 Gas analysis—Helium ionization gas chromatography
GB/T 33145 Large-volume seamless steel gas cylinders
GB/T 34528 Filling regulations for gas cylinder bundles
GB/T 43306 Gas analysis—Sampling guidelines
TSG 23 Technical regulation for gas cylinders
3 Terms and Definitions
No terms or definitions require clarification in this document.
4 Technical Requirements
The technical requirements for pure nitrogen, high-purity nitrogen, and ultra-high-purity nitrogen shall comply with Table 1.
5 Sampling
Shall comply with GB/T 43306.
6 Test Methods
6.1 Purity of Pure, High-Purity, and Ultra-High-Purity Nitrogen
6.1.1 Calculation of Total Impurity Content
6.1.1.1 The total impurity content in gaseous pure, high-purity, and ultra-high-purity nitrogen shall be calculated using Formula (1).
6.2 Determination of Hydrogen, Oxygen, Argon, Carbon Monoxide, Carbon Dioxide, and Methane Content
6.2.1 Test Methods
6.2.1.1 The contents of hydrogen (H₂), argon (Ar), carbon monoxide (CO), carbon dioxide (CO₂), and methane (CH₄) shall be determined according to GB/T 28726.
6.2.1.2 The oxygen (O₂) content shall be determined according to GB/T 6285. Alternatively, GB/T 28124, GB/T 28726, GB/T 37182, or other equivalent methods may be used. In case of disputes, the method specified in GB/T 6285 shall serve as the arbitration method.
6.2.1.3 Other equivalent methods (as specified in 6.2.2) may be used for determining H₂, Ar, CO, CO₂, and CH₄. In case of disputes, the method specified in GB/T 28726 shall serve as the arbitration method.
6.2.2 Other Equivalent Test Methods
6.2.2.1 The contents of H₂, Ar, CO, CO₂, and CH₄ may be determined according to GB/T 37182.
6.2.2.2 The contents of H₂, CO, and CH₄ may be determined according to GB/T 28124.
6.2.2.3 The contents of CO, CO₂, and CH₄ may be determined according to GB/T 8984.
6.3 Determination of Moisture Content
6.3.1 Moisture Content in Pure Nitrogen
Shall be determined according to GB/T 5832.2. Alternatively, GB/T 5832.1, GB/T 5832.4, or other equivalent methods may be used. In case of disputes, the method specified in GB/T 5832.2 shall serve as the arbitration method.
6.3.2 Moisture Content in High-Purity and Ultra-High-Purity Nitrogen
Shall be determined according to GB/T 5832.3. Alternatively, GB/T 5832.1, GB/T 5832.2, GB/T 5832.4, or other equivalent methods may be used. In case of disputes, the method specified in GB/T 5832.3 shall serve as the arbitration method.
6.4 Tail Gas Treatment
During testing, measures shall be taken to prevent the accumulation of pure nitrogen, high-purity nitrogen, or ultra-high-purity nitrogen indoors.
7 Inspection Rules
7.1 Batch Sampling, Inspection, and Re-inspection for Cylinder-Filled Pure and High-Purity Nitrogen
7.1.1 A batch of cylinder-filled pure or high-purity nitrogen shall consist of products manufactured under continuous stable production conditions on the same production line, with a maximum batch size of 300 cylinders.
7.1.2 For cylinder-filled pure and high-purity nitrogen, sampling for inspection shall be conducted randomly according to the sampling quantities specified in Table 2.
Standard
GB/T 8979-2025 Pure nitrogen,high purity nitrogen and ultra pure nitrogen (English Version)
Standard No.
GB/T 8979-2025
Status
to be valid
Language
English
File Format
PDF
Word Count
6000 words
Price(USD)
180.0
Implemented on
2026-3-1
Delivery
via email in 1~3 business day
Detail of GB/T 8979-2025
Standard No.
GB/T 8979-2025
English Name
Pure nitrogen,high purity nitrogen and ultra pure nitrogen
GB/T 8979-2025 Pure nitrogen,high purity nitrogen and ultra pure nitrogen 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 77.140.60
CCS H 59
National Standard of the People's Republic of China
GB/T 8979-2025
Replaces GB/T 8979-2008
Pure nitrogen,high purity nitrogen and ultra pure nitrogen
Issue date: 2025-08-29 Implementation date: 2026-03-01
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 Technical Requirements
5 Sampling
6 Test Methods
7 Inspection rules
8 Marking, Packaging, Transportation, Storage and Safety Information
Pure nitrogen,high purity nitrogen and ultra pure nitrogen
1 Scope
This document specifies the technical requirements, sampling, test methods, inspection rules, marking, packaging, filling, transportation, and storage for pure nitrogen, high-purity nitrogen, and ultra-high-purity nitrogen, and provides safety information for these gases.
This document applies to gaseous and liquid pure nitrogen, high-purity nitrogen, and ultra-high-purity nitrogen obtained by separation from air or through purification processes.
2 Normative References
The following referenced documents contain provisions that are indispensable for this document through normative citations. For dated references, only the edition cited applies. For undated references, the latest version (including any amendments) applies.
GB 190 Marking for dangerous goods packages
GB/T 3864 Industrial nitrogen
GB/T 5099 (all parts) seamless steel gas cylinders
GB/T 5832.2 Gas analysis—Determination of trace moisture—Part 2: Dew-point method
GB/T 5832.3 Gas analysis—Determination of trace moisture—Part 3: Cavity ring-down spectroscopy
GB/T 6285 Determination of trace oxygen in gases—Electrochemical method
GB/T 7144 Color marking for gas cylinders
GB/T 8170 Rules for rounding off numerical values and representation and judgment of limiting values
GB/T 11640 Seamless aluminum alloy gas cylinders
GB/T 14194 Filling regulations for compressed gas cylinders
GB 15258 General rules for preparation of chemical safety labels
GB/T 16804 Warning labels for gas cylinders
GB/T 24159 Welded insulated gas cylinders
GB/T 28726 Gas analysis—Helium ionization gas chromatography
GB/T 33145 Large-volume seamless steel gas cylinders
GB/T 34528 Filling regulations for gas cylinder bundles
GB/T 43306 Gas analysis—Sampling guidelines
TSG 23 Technical regulation for gas cylinders
3 Terms and Definitions
No terms or definitions require clarification in this document.
4 Technical Requirements
The technical requirements for pure nitrogen, high-purity nitrogen, and ultra-high-purity nitrogen shall comply with Table 1.
5 Sampling
Shall comply with GB/T 43306.
6 Test Methods
6.1 Purity of Pure, High-Purity, and Ultra-High-Purity Nitrogen
6.1.1 Calculation of Total Impurity Content
6.1.1.1 The total impurity content in gaseous pure, high-purity, and ultra-high-purity nitrogen shall be calculated using Formula (1).
6.2 Determination of Hydrogen, Oxygen, Argon, Carbon Monoxide, Carbon Dioxide, and Methane Content
6.2.1 Test Methods
6.2.1.1 The contents of hydrogen (H₂), argon (Ar), carbon monoxide (CO), carbon dioxide (CO₂), and methane (CH₄) shall be determined according to GB/T 28726.
6.2.1.2 The oxygen (O₂) content shall be determined according to GB/T 6285. Alternatively, GB/T 28124, GB/T 28726, GB/T 37182, or other equivalent methods may be used. In case of disputes, the method specified in GB/T 6285 shall serve as the arbitration method.
6.2.1.3 Other equivalent methods (as specified in 6.2.2) may be used for determining H₂, Ar, CO, CO₂, and CH₄. In case of disputes, the method specified in GB/T 28726 shall serve as the arbitration method.
6.2.2 Other Equivalent Test Methods
6.2.2.1 The contents of H₂, Ar, CO, CO₂, and CH₄ may be determined according to GB/T 37182.
6.2.2.2 The contents of H₂, CO, and CH₄ may be determined according to GB/T 28124.
6.2.2.3 The contents of CO, CO₂, and CH₄ may be determined according to GB/T 8984.
6.3 Determination of Moisture Content
6.3.1 Moisture Content in Pure Nitrogen
Shall be determined according to GB/T 5832.2. Alternatively, GB/T 5832.1, GB/T 5832.4, or other equivalent methods may be used. In case of disputes, the method specified in GB/T 5832.2 shall serve as the arbitration method.
6.3.2 Moisture Content in High-Purity and Ultra-High-Purity Nitrogen
Shall be determined according to GB/T 5832.3. Alternatively, GB/T 5832.1, GB/T 5832.2, GB/T 5832.4, or other equivalent methods may be used. In case of disputes, the method specified in GB/T 5832.3 shall serve as the arbitration method.
6.4 Tail Gas Treatment
During testing, measures shall be taken to prevent the accumulation of pure nitrogen, high-purity nitrogen, or ultra-high-purity nitrogen indoors.
7 Inspection Rules
7.1 Batch Sampling, Inspection, and Re-inspection for Cylinder-Filled Pure and High-Purity Nitrogen
7.1.1 A batch of cylinder-filled pure or high-purity nitrogen shall consist of products manufactured under continuous stable production conditions on the same production line, with a maximum batch size of 300 cylinders.
7.1.2 For cylinder-filled pure and high-purity nitrogen, sampling for inspection shall be conducted randomly according to the sampling quantities specified in Table 2.
