Paragraph 2 FIELD OF APPLICATION
This procedure is applicable to analysing samples of fertiliser extracts obtained by Methods 26a and 26b for which a declaration of total and/or water-soluble iron or zinc is required. Adaptations of this procedure for the various trace elements are detailed in the methods defined specifically for each element.
Note:
In most cases the presence of small quantities of organic matter will not affect determinations by means of atomic absorption spectrometry.