Standardization in the field of fertilizers, soil conditioners and beneficial substances, that is, materials whose addition is intended to ensure or improve the nourishment of cultivated plants and / or to improve the properties of soils, and the efficient use thereof.

Quick links


Published ISO standards *


ISO standards under development *

Participating members
Observing members

* number includes updates

Reference Title Type
ISO/TC 134/WG 1   Fertilizers Working group
ISO/TC 134/WG 3   Vocabulary and statistics Working group
ISO/TC 134/WG 4   Soil conditioners Working group
ISO/TC 134/WG 5   Microbiology Working group
ISO/TC 134/WG 6   Beneficial substances (including biostimulants) Working group
Liaison Committees to ISO/TC 134

The committees below can access the documents of ISO/TC 134:

Reference Title ISO/IEC
ISO/TC 24 Particle characterization including sieving ISO
ISO/TC 69 Applications of statistical methods ISO
ISO/TC 229 Nanotechnologies ISO
ISO/TC 275 Sludge recovery, recycling, treatment and disposal ISO


Liaison Committees from ISO/TC 134

ISO/TC 134 can access the documents of the committees below:

Reference Title ISO/IEC
ISO/TC 23/SC 18 Irrigation and drainage equipment and systems ISO
ISO/TC 24 Particle characterization including sieving ISO
ISO/TC 34/SC 10 Animal feeding stuffs ISO
ISO/TC 47 Chemistry ISO
ISO/TC 69 Applications of statistical methods ISO
ISO/TC 190 Soil quality ISO
ISO/TC 190/SC 3 Chemical and physical characterization ISO


Organizations in liaison (Category A and B)
Acronym Title Category
AOAC INTERNATIONAL AOAC INTERNATIONAL, Association of Analytical Communities A
EC - European Commission European Commission A
FE Fertilizers Europe A
IFA International Fertilizer Industry Association A
IFDC International Center for Soil Fertility and Agricultural Development A
IMPHOS World Phosphate Institute A
FAO Food and Agriculture Organization of the United Nations B
OECD Organisation for Economic Co-operation and Development, OECD B
WCO World Customs Organization B

ISO/TC 134 - Secretariat

INSO [Iran, Islamic Republic of]

Iran National Standards Organization
No.: 2592
South West Vanak Square,
P.O. Box: 14155-6139
Iran, Islamic Republic of

Tel: +98 26 32807045
Fax: +98 26 32818787