GB/T 45891-2025 Active National standards

GB/T 45891-2025 Fertilizers and soil conditioners—Determination of humic and hydrophobic fulvic acids concentrations in fertilizer materials

Publish Date: 2025-06-30 Implement Date: 2026-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 45891-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Fertilizers and pesticides

ICS Name: Fertilizer

Publish Date: 2025-06-30

Implement Date: 2026-01-01

Pages: 20 pages

Scope

This document describes the determination methods for humic acid and hydrophobic fulvic acid.
This document is applicable to the determination of the content of humic acid and hydrophobic fulvic acid in solid and liquid raw materials of commercial fertilizers, soil conditioners, and geological sediments.