Fertilizers. Chemical analysis. Determination of nitrogen - Method for determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide (titrimetric method) Ingestion-build-260237 BS ISO 26842-1:2020 supersedes BS

BS ISO 26842-1:2020 supersedes BS ISO 26842-1:2013

using cold-vapour atomic absorption spectrometry or cold-vapour atomic fluorescence spectrometry

Obsolescence management helps prevent unnecessary losses (for example loss of commercial service or capability) and treat risks associated with obsolescence

Normative references have been added

all terminals and the locating tab if present

Fertilizers. Chemical analysis. Determination of nitrogen - Method for determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide (titrimetric method) Ingestion-build-260237 BS ISO 26842-1:2020 supersedes BSWhat is BS 5551 4. 1. 4 Ammoniacal nitrogen content in fertilizers about? BS 5551 4. 1. 4 is an international standard that covers the determination of ammoniacal nitrogen content in fertilizers which enables the control of soil acidity for optimum plant growth. BS 5551 4. 1. 4 specifies a method for the determination of the ammoniacal nitrogen content of fertilizers containing other substances, such as urea or urea aldehyde condensates, which release