Committee:
GT 1 Soil improvers and growing media
GT 2 Agricultura ecológica
GT 3 Plant biostimulants and agricultural micro-organisms
ISO/TC 134 Fertilizers, soil conditioners and beneficial substances
CEN/TC 223 Soil improvers and growing media
CEN/TC 260 Fertilizers and liming materials
CEN/TC 455 Plant Biostimulants
Standards developed by the committee: CTN 142: 379
Status: VIGENTE / 2023-06-20
Fertilizers - Extraction of total calcium, total magnesium, total sodium and total sulfur in the forms of sulfates
Fertilizers - Extraction of water soluble phosphorus
Fertilizers - Extraction of phosphorus which is soluble in neutral ammonium citrate
Fertilizers - Extraction and determination of elemental sulfur
Status: VIGENTE / 2023-06-05
Soil improvers and growing media - Extraction of water soluble nutrients and elements
Status: VIGENTE / 2023-05-23
FERTILIZERS AND SOIL CONDITIONERS. FINAL SAMPLES. PRACTICAL ARRANGEMENTS.
FERTILIZERS. PRESENTATION OF SAMPLING REPORTS.
Status: VIGENTE / 2023-04-26
Fertilizers - Determination of sulfates content using three different methods
Status: VIGENTE / 2022-07-08
Liming materials - Determination of calcium content - Oxalate method.
Slow-release fertilizers - Determination of the release of the nutrients - Method for coated fertilizers
Fertilizers - Determination of water content (Karl Fischer methods) - Part 1: Methanol as extracting medium
Fertilizers - Determination of water content (Karl Fischer methods) - Part 2: 2-propanol as extracting medium
Fertilizers - Determination of 1H-1,2,4-triazole in urea and in fertilizers containing urea - Method using high-performance liquid chromatography (HPLC)
Fertilizers - Extraction of soluble phosphorus according to Petermann at 65 °C
Fertilizers - Extraction of soluble phosphorus according to Petermann at ambient temperature
Fertilizers - Extraction of phosphorus soluble in 2 % citric acid
Fertilizers - Extraction of phosphorus soluble in 2 % formic acid
Fertilizers - Extraction of phosphorus soluble in Joulie's alcaline ammonium citrate
SOLID FERTILIZERS. MEASUREMENTS OF STATIC ANGLE OF REPOSE. (ISO 8398:1989 MODIFIED).
Solid fertilizers - Test sieving (ISO 8397:1988 modified)
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