Draft
International Standard
ISO/DIS 25300
Soil conditioners and beneficial substances — Determination of free amino acids
Reference number
ISO/DIS 25300
Edition 1
© ISO 2026
Draft International Standard
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Under development
This Draft International Standard is in the enquiry phase with ISO members.

ISO/DIS 25300

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CHF 67
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Abstract

This document specifies the methods for determining the content of free amino acids in fertilizers, including the use of automatic amino acid analyzers, pre-column derivatization followed by high-performance liquid chromatography and high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS). These methods are applicable to the following amino acids: Asparagine Tryptophan, Glutamine, Theanine, Aspartic acid, Threonine, Serine, Glutamic acid, Proline, Glycine, Alanine, Valine, Methionine, Isoleucine, Leucine, Tyrosine, Phenylalanine, Histidine, Lysine, Arginine, and Cysteine.

General information

  • Status
     : Under development
    Stage
    : Close of voting [40.60]
  • Edition
     : 1
    Number of pages
     : 12
  • Technical Committee :
    ISO/TC 134
    ICS :
    65.080 
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Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goals

2
Zero Hunger
12
Responsible Consumption and Production
13
Climate Action

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