GB/T 8979-2025 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 8979-2025	RFQ	ASK	3 days	Pure nitrogen, high purity nitrogen and ultra pure nitrogen	Valid
GB/T 8979-2008	70	Add to Cart	Auto, < 3 mins	Pure nitrogen and high purity nitrogen and ultra-pure nitrogen	Valid
GB/T 8979-1996	199	Add to Cart	2 days	Pure nitrogen	Obsolete
GB 8979-1988	199	Add to Cart	2 days	Pure nitrogen	Obsolete

Basic data

Standard ID: GB/T 8979-2025 (GB/T8979-2025)
Description (Translated English): Pure nitrogen, high purity nitrogen and ultra pure nitrogen
Sector / Industry: National Standard (Recommended)
Date of Implementation: 2026-03-01
Older Standard (superseded by this standard): GB/T 8979-2008

GB/T 8979-2008: Pure nitrogen and high purity nitrogen and ultra-pure nitrogen

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Pure nitrogen and high purity nitrogen and ultra pure nitrogen ICS 71.100.20 G86 National Standards of People's Republic of China Replacing GB/T 8979-1996, GB/T 8980-1996 Nitrogen, high purity nitrogen and ultra pure nitrogen Posted 2008-05-15 2008-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 8979-1996 "nitrogen" and GB/T 8980-1996 "high purity nitrogen." This standard and GB/T 8979-1996 and GB/T 8980-1996 compared to the main changes are as follows. --- Adjusted normative references (Excerpts Chapter 2, GB/T 8979-1996 Chapter 2 and GB/T 8980-1996 of Chapter 2); --- Modified nitrogen, high purity nitrogen technical requirements (Excerpts of Table 1, GB/T 8979-1996 Table 1 and GB/T 8980-1996 Table 1); --- Modified hydrogen, oxygen, carbon monoxide, methane measuring method (Excerpts of 4.3, GB/T 8979-1996 and GB/T 8980- 1996 4.3,4.4,4.6); --- Increased the determination of argon content (edition 4.5). The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee gases. This standard was drafted. Southwest Chemical Industry Research and Design Institute, Wuhan Iron and Steel Group Company oxygen. The main drafters of this standard. He Daoshan, Chen Yali, Tianming Yong, Li Hong. This standard replaces the standards previously issued as follows. --- GB/T 8979-1988, GB/T 8979-1996; --- GB/T 8980-1988, GB/T 8980-1996. Nitrogen, high purity nitrogen and ultra pure nitrogen

1 Scope

This standard specifies the purity nitrogen, high purity nitrogen and ultra pure nitrogen products, technical requirements, test methods and packaging, labeling, storage, security alerts and so on. This standard applies to air separation or purified gaseous or liquid nitrogen, high purity nitrogen and ultra pure nitrogen, primarily used as a protective gas, home Ventilation, gas and other reaction. Molecular formula. N2 Molecular Weight. 28.0134 (at 2005 relative atomic mass)

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 3864-2008 industrial nitrogen Determination of GB/T 5832.1 gas humidity - Part 1. Electrolysis GB/T 5832.2 Determination of moisture content of trace gas dew point method Determination of GB/T 6285 trace gas oxygen electrochemical GB/T 8981 Determination of trace hydrogen gas in gas chromatography GB/T 8984.1 of carbon monoxide, carbon dioxide and hydrocarbon measurement - Part 1. carbon monoxide gas, di Determination of carbon dioxide and methane GB/T 14605 trace oxygen argon, nitrogen and krypton by gas chromatography HG/T 2686 trace inert gases hydrogen, oxygen, methane, carbon monoxide measurement zirconia detector Gas Chromatography

3 Requirements

Nitrogen, high purity nitrogen and ultra pure nitrogen should meet the technical requirements specified in Table 1. Table 1 purity nitrogen, high purity nitrogen and ultra pure nitrogen technical requirements project index Ultra-high purity nitrogen nitrogen nitrogen Nitrogen (N2) purity (volume fraction)/10-2 ≥ 99.99 99.999 99.9999 Oxygen (O2) content (volume fraction)/10-6 ≤ 50 3 0.1 Argon (Ar) content (volume fraction)/10-6 ≤ - - 2 Hydrogen (H2) content (volume fraction)/10-6 ≤ 15 1 0.1 Carbon monoxide (CO) content (volume fraction)/10-6 ≤ 5 1 0.1 Carbon dioxide (CO2) content (volume fraction)/10-6 ≤ 10 1 0.1 Methane (CH4) content (volume fraction)/10-6 ≤ 5 1 0.1 Water (H2O) content (volume fraction)/10-6 ≤ 15 3 0.5 ......

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