SCHEDULE 2METHODS OF ANALYSIS
PART I
Methods of analysis3
1
Preparation of the sample for analysis
2
Determination of ammoniacal nitrogen
3.a
Determination of nitrate and ammoniacal nitrogen—Ulsch method
b
Determination of nitrate and ammoniacal nitrogen—Arnd method
c
Determination of nitrate and ammoniacal nitrogen—Devarda method
4.a
Determination of nitrogen in calcium cyanamide—in the absence of nitrate
b
Determination of nitrogen in calcium cyanamide—in the presence of nitrate
5
Determination of total nitrogen in urea
6
Determination of cyanamide nitrogen
7
Determination of biuret in urea
8.a
Determination of different forms of nitrogen—in the presence of cyanamide nitrogen
b
Determination of different forms of nitrogen—in the absence of cyanamide nitrogen
9.a
Extraction of total phosphorus—by mineral acids
b
Extraction of phosphorus—by 2% formic acid
c
Extraction of phosphorus—by 2% citric acid
d
Extraction of phosphorus—by neutral ammonium citrate
e
Extraction of phosphorus—by alkaline ammonium citrate (Petermann’s method) at 65°C
f
Extraction of phosphorus—by alkaline ammonium citrate (Petermann’s method) at ambient temperature
g
Extraction of phosphorus—by alkaline ammonium citrate (Joulie’s method)
h
Extraction of phosphorus—by water
10
Determination of extracted phosphorus
11
Determination of water-soluble potassium
12.a
Determination of water-soluble magnesium—atomic absorption spectrophotometric method
b
Determination of water-soluble magnesium—EDTA method
13.a
Determination of total magnesium—atomic absorption spectrophotometric method
b
Determination of total magnesium—EDTA method
14
Determination of chlorides, in the absence of organic matter
15.a
Determination of fineness of grinding—dry method
b
Determination of fineness of grinding—for soft natural phosphates
16
Methods of analysis and test procedures for ammonium nitrate fertiliser containing more than 28% nitrogen by weight
a
Methods for the application of thermal cycles
b
Determination of oil retention
c
Determination of the combustible ingredients
d
Determination of the pH value
e
Determination of particle size
f
Determination of the chloride content (as chloride ion)
g
Determination of copper