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GB/T 21459.3-2025Specification for drafting standards of fungal pesticide wettable powder (WP) (English PDF)

真菌农药可湿性粉剂产品标准编写规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 31, 2025

Implementation date

May 1, 2026

Scope

GB/T 21459.3-2025 is the English-translated version of 真菌农药可湿性粉剂产品标准编写规范.

GB/T 21459.3-2025 is the Chinese standard "Specification for drafting standards of fungal pesticide wettable powder (WP)". Its scope clause reads: This document specifies the technical requirements, test methods, inspection rules, acceptance criteria, and quality guarantee period for wettable powder fungal pesticides.

Content and writing requirements for signs, labels, packaging, and storage and transportation. This document applies to the drafting of product standards for wettable powder fungal pesticides. Its clauses include terms and definitions.

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Document preview — GB/T 21459.3-2025

National Standard of the People's Republic of China

ICS: 65.100
Classification: G 23
Replacing: GB/T 21459.3-2008

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

1 Scope
2 Normative references
3 Terms and Definitions
3.1 spore
3.2 Conidia
3.3 microbial density

1 Scope

This document specifies the technical requirements, test methods, inspection rules, acceptance criteria, and quality guarantee period for wettable powder fungal pesticides.

Content and writing requirements for signs, labels, packaging, and storage and transportation.

This document applies to the drafting of product standards for wettable powder fungal pesticides.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 1600-2021 Method for Determination of Moisture Content in Pesticides

GB/T 1601 Method for Determination of pH Value of Pesticides

GB/T 1604 Rules for Acceptance of Commercial Pesticides

GB/T 1605 Sampling Methods for Commercial Pesticides

GB 3796 General Rules for Pesticide Packaging

GB/T 5451 Determination of wettability of pesticide wettable powders

GB/T 14825-2023 Method for Determination of Pesticide Suspension Rate

GB/T 16150-1995 Method for Determination of Fineness of Pesticide Powders and Wettable Powders

GB/T 19136-2021 Determination of thermal storage stability of pesticides

GB/T 28135 Determination of Acidity (Alkalinity) of Pesticides - Indicator Method

GB/T 28137 Determination of persistent foaming properties of pesticides

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 spore

The reproductive body of a fungus.

Note. There are various types, including conidia, budspores, and chlamydospores.

3.2 Conidia

Colorless or colored spores produced by conidiophore cells (terminal/lateral, chain/clustered, various shapes and sizes, unicellular/multicellular)

Asexually reproducing cells.

Note. This is the most common spore type in fungal pesticides.

3.3 microbial density

The effective ingredient contained per unit mass or volume of fungal pesticides is the number of live bacterial colonies. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 21459.3

Edition	Title	Revision	Status
GB/T 21459.3-2025	Specification for drafting standards of fungal pesticide wettable powder (WP)	current edition	Current
GB/T 21459.3-2008	Specification guidelines for fungal pesticide powders (WP)	previous edition	In force

This page sells the current edition, GB/T 21459.3-2025. Earlier editions are listed for reference only.

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