GB/T 45967-2025General method for the determination of total carbon content and total organic carbon content in inorganic chemical products (English PDF)
无机化工产品中总碳和总有机碳含量测定通用方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 1, 2025
Implementation date
February 1, 2026
Scope
GB/T 45967-2025 is the English-translated version of 无机化工产品中总碳和总有机碳含量测定通用方法.
GB/T 45967-2025 is the Chinese general method for determining the total carbon content and the total organic carbon content of inorganic chemical products.
It sets the general provisions, among them the use of superior grade reagents and of carbon dioxide free water, and the sampling and sample preparation, and it describes the measurement procedure.
It also gives the principle of the determination, the methods for total carbon and for total organic carbon, and the precision and accuracy of the results. Total carbon is the whole amount of carbon in a substance, total organic carbon the part of it that is in organic form.
Producers and laboratories of inorganic chemicals use it. It was issued on 1 August 2025 and has applied since 1 February 2026.
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Document preview — GB/T 45967-2025
National Standard of the People's Republic of China
- ICS
- 71.060.01
- Classification
- G 10
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 General Provisions
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.
1 Scope
This document specifies the general provisions, sampling and sample preparation for the determination of total carbon and total organic carbon content in inorganic chemical products, and describes the measurement procedures.
The principle of the determination method, the determination method of total carbon and total organic carbon content, and the precision and accuracy of the determination method are given.
This document applies to the determination of total carbon and total organic carbon content in inorganic chemical products.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to this document.
GB/T 6678 General Principles for Sampling of Chemical Products
HG/T 3696.3 Preparation of standard solutions, preparations and products for chemical analysis of inorganic chemical products Part 3: Preparations and products Preparation
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Total carbon content
The total amount of carbon contained in a substance.
3.2 Total organic carbon content
The total amount of carbon in organic form contained in a substance.
4 General Provisions
The reagents and water used in this document, unless otherwise specified, refer to high-grade pure reagents (or reference reagents) and carbon dioxide-free water.
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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
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Related Standards
GB/T 6678-2003 — General principles for sampling chemical products
HG/T 3696.3-2002 — Inorganic chemical products - Preparation of reagent solutions and products for chemical analysis
HG/T 3696.3-2011 — Inorganic chemical products - Preparation of standard solutions, reagent solutions and products for chemical analysis - Part 3: Preparation of reagent solutions and products
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GB/T 45967-2025
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