T/ZYNY 011-2023 Active

Scope: This document specifies the quality requirements, test methods, inspection rules, marking, packaging, transportation, and storage of Chinese herbal fertilizers. This document applies to the production of Chinese herbal fertilizers using extracts from Chinese herbal plants. Main technical content: 4. Quality requirements 4.1 Appearance: The appearance is a brown-yellow to brown homogeneous liquid, with no obvious suspended matter or sediment. 4.2 Physicochemical indicators: The physicochemical indicators shall comply with the requirements of Table 1. Table 1: Physicochemical indicators Item Standard pH value range 3.0–9.0 Organic matter concentration (g/L) ≥50.0 Total trace elements (Fe+Zn) concentration (g/L) ≥100.0 Water-insoluble substance fraction (a), % ≤10.0 Mercury (Hg) content, mg/kg <0.05 Arsenic (As) content, mg/kg <1.3 Cadmium (Cd) content, mg/kg <0.5 Lead (Pb) content, mg/kg <5.0 Chromium (Cr) content, mg/kg <2.0 a The total mass fraction of trace elements refers to the mass fraction of at least one of the elements zinc and iron. The content of a single element is less than 0.1 g/L and is not counted.