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GB/T 33804-2025: Fertilizer grade potassium humate
Status: Valid GB/T 33804: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 33804-2025 | English | 219 |
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Fertilizer grade potassium humate
| Valid |
GB/T 33804-2025
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| GB/T 33804-2017 | English | 199 |
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Potassium humate for agricultural use
| Valid |
GB/T 33804-2017
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PDF similar to GB/T 33804-2025
Basic data | Standard ID | GB/T 33804-2025 (GB/T33804-2025) | | Description (Translated English) | Fertilizer grade potassium humate | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G21 | | Classification of International Standard | 65.080 | | Word Count Estimation | 10,192 | | Date of Issue | 2025-05-30 | | Date of Implementation | 2025-12-01 | | Older Standard (superseded by this standard) | GB/T 33804-2017 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 33804-2025: Fertilizer grade potassium humate---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.
ICS 65.080
CCSG21
National Standard of the People's Republic of China
Replaces GB/T 33804-2017
Fertilizer Grade Potassium Humate
Released on 2025-05-30
2025-12-01 Implementation
State Administration for Market Regulation
The National Standardization Administration issued
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.
This document replaces GB/T 33804-2017 "Potassium humate for agricultural use". Compared with GB/T 33804-2017, except for the structural adjustment and compilation
In addition to logical changes, the main technical changes are as follows.
a) The terms and definitions of “humic acid from mineral sources” and “potassium humate for agricultural use” have been deleted (see 3.1 and 3.2 of the.2017 edition);
b) Added the term and definition of "fertilizer grade potassium humate" (see 3.1), and changed the term and definition of "soluble humic acid" (see 3.2,
3.3 of the.2017 edition);
c) Changed some technical index requirements of the product (see Table 1, Table 1 of the.2017 edition);
d) The limit requirements for toxic and hazardous substances (see 4.3, 4.3 of the.2017 edition) and their test methods (see 6.10,
5.9);
e) Added sample reduction and specimen preparation (see Chapter 5);
f) The determination method of soluble humic acid content has been changed (see 6.2, 5.3 and Appendix A of the.2017 edition);
g) The determination method of potassium content has been changed (see 6.3, 5.4 and Appendix B of the.2017 edition);
h) Added the determination method of organic matter content (see 6.5);
i) The method for determining sodium content has been changed (see 6.6, 5.6 and Appendix C of the.2017 edition);
j) Added the method for determining particle size (see 6.9);
k) The inspection rules have been changed (see Chapter 7, Chapter 6 of the.2017 edition).
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Petroleum and Chemical Industry Federation.
This document is under the jurisdiction of the National Technical Committee on Standardization of Fertilizers and Soil Conditioners (SAC/TC105).
This document was drafted by. Ladom Technology Group Co., Ltd., Xinjiang Black Ecological Technology Co., Ltd., Liaoning Putian Technology
Co., Ltd., Henan Xinlianxin Fertilizer Testing Co., Ltd., Suzhou Sanyouhui Information Technology Co., Ltd., Aiso Standardization Service (Shandong) Co., Ltd.
Company, Shanghai Chemical Industry Research Institute Testing Co., Ltd., Shandong Tiancheng Testing and Certification Co., Ltd., Liaocheng University Dongchang College, Xinjiang Shuanglong Humic Acid Co., Ltd.
Company, Shandong Xinquanlin Industrial Investment Co., Ltd.
The main drafters of this document are. Ji Xiaohui, Yang Jinchang, Ren Rongkui, Yin Lihua, Zhang Hongying, Luo Yanli, Guo Jingli, Yan Kun, Cai Zeyu,
Jia Tingge, Yang Maofeng, Xue Hui, Li Zhenhua, Xu Kequan, and Zhang Jun.
The previous versions of this document and the documents it replaces are as follows.
---First published in.2017 as GB/T 33804-2017;
---This is the first revision.
Fertilizer Grade Potassium Humate
1 Scope
This document specifies the requirements, sample reduction and sample preparation, inspection rules, labeling, packaging, transportation and storage of fertilizer grade potassium humate.
The corresponding test methods are described.
This document applies to the research and development, production, testing and evaluation of fertilizer-grade potassium humate.
2 Normative references
The contents of the following documents constitute 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 191 Pictorial markings for packaging, storage and transportation
GB/T 6679 General Rules for Sampling of Solid Chemical Products
GB/T 8170 Rules for rounding off values and expression and determination of limit values
GB/T 8569 Packaging of solid chemical fertilizers
GB/T 17767.3 Determination of organic-inorganic compound fertilizers Part 3.Total potassium content
GB 18382 Fertilizer Labeling Contents and Requirements
GB/T 24891 Determination of particle size of compound fertilizers
GB/T 38073-2019 Terminology of humic acid raw materials and fertilizers
GB 38400-2019 Limits of toxic and hazardous substances in fertilizers
GB/T 40461 Determination of sodium content in fertilizers
JJF1070 Rules for the measurement and inspection of the net content of quantitatively packaged goods
HG/T 3278 Sodium humate
NY/T 525 Organic Fertilizer
3 Terms and definitions
The terms and definitions defined in GB/T 38073-2019 and the following apply to this document.
3.1
Potassium humate fertilizer is made by reacting mineral humic acid with potassium hydroxide under certain conditions.
3.2
Soluble humic acid
Humic acid fertilizers and humate products are obtained by extraction with water and acid precipitation, and the humic acid is in ionic state in the extract.
Note. Soluble humic acid is the main technical indicator for measuring humic acid fertilizers and humate products.
[Source. GB/T 38073-2019, 2.1.9]
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