Paragraph 5 Methods of Analysis
Preparation of the sample for analysis
Determination of ammoniacal nitrogen
Determination of nitrate and ammoniacal nitrogen — Ulsch method
Determination of nitrate and ammoniacal nitrogen — Arnd method
Determination of nitrate and ammoniacal nitrogen — Devarda method
Determination of the total nitrogen in calcium cyanamide — in the absence of nitrate
Determination of the total nitrogen in calcium cyanamide — in the presence of nitrate
Determination of total nitrogen in urea
Determination of cyanamide nitrogen
Determination of biuret in urea
Determination of different forms of nitrogen in the same sample — in the presence of cyanamide nitrogen
Determination of different forms of nitrogen in the same sample — in the absence of cyanamide nitrogen
Extraction of total phosphorus — by mineral acids
Extraction of phosphorus — by 2% formic acid
Extraction of phosphorus — by 2% citric acid
Extraction of phosphorus — by neutral ammonium citrate
Extraction of phosphorus — by alkaline ammonium citrate (Petermann’s method) at 65°C
Extraction of phosphorus — by alkaline ammonium citrate (Petermann’s method) at ambient temperature
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g Extraction of phosphorus — by alkaline ammonium citrate (Joulie’s method)
Extraction of phosphorus — by water
Determination of extracted phosphorus
Determination of water-soluble potassium
Determination of chlorides in the absence of organic matter
Determination of fineness of grinding — dry method
Determination of fineness of grinding of soft natural phosphates
Methods of analysis and test procedures for ammonium nitrate fertiliser containing more than 28% nitrogen by weight
Method for the application of thermal cycles
Determination of the oil retention value
Determination of combustible ingredients
Determination of the pH value
Determination of the particle size
Determination of the chlorine content (as chloride ion)
Determination of copper
Extraction of total calcium, total magnesium, total sodium and total sulfur in the form of sulfates
Extraction of total sulfur
Extraction of water-soluble calcium, magnesium, sodium and sulfur (in the form of sulfates)
Extraction of water-soluble sulfur
Extraction and determination of elemental sulfur
Manganimetric determination of extracted calcium following precipitation in the form of oxalate
Determination of magnesium by atomic absorption spectrometry
Determination of magnesium by complexometry
Determination of sulfates
Determination of the sodium extracted
Trace elements at a concentration less than 10%
Extraction of total trace elements
Extraction of water-soluble trace elements
Removal of organic compounds from fertiliser extracts
Determination of trace elements in fertiliser extracts by atomic absorption spectrometry (general procedure)
Determination of boron in fertiliser extracts by means of spectrometry with azomethine-h
Determination of cobalt in fertiliser extracts by atomic absorption spectrometry
Determination of copper in fertiliser extracts by atomic absorption spectrometry
Determination of iron in fertiliser extracts by atomic absorption spectrometry
Determination of manganese in fertiliser extracts by atomic absorption spectrometry
Determination of molybdenum in fertiliser extracts by spectrometry of a complex with ammonium thiocyanate
Determination of zinc in fertiliser extracts by atomic absorption spectrometry
Trace elements at a concentration greater than 10%
Extraction of total trace elements
Extraction of water-soluble trace elements
Removal of organic compounds from fertiliser extracts
Determination of trace elements in fertiliser extracts by atomic absorption spectrometry (general procedure)
Determination of boron in fertiliser extracts by means of acidimetric titration
Determination of cobalt in fertiliser extracts by the gravimetric method with 1-nitroso-2-naphthol
Determination of copper in fertiliser extracts by the titrimetric method
Determination of iron in fertiliser extracts by atomic absorption spectrometry
Determination of manganese in fertiliser extracts by titration
Determination of molybdenum in fertiliser extracts by the gravimetric method with 8-hydroxyquinoline
Determination of zinc in fertiliser extracts by atomic absorption spectrometry