National foreword
Cooperating organizations
Methods
1 Scope
2 Field of application
3 Reference
4 Principle
5 Reagents
6 Apparatus
7 Sampling
8 Procedure
9 Expression of results
10 Test report
Figures
1 Absorption bottle
2 Typical calibration curve obtained using a single-
beam spectrophotometer with cells having an optical
path length of 20 mm
3 Typical calibration curve obtained using a single-
beam spectrophotometer with cells having an optical
path length of 10 mm
4 Typical calibration curve obtained using a double-
beam spectrophotometer with cells having an optical
path length of 20 mm
5 Typical calibration curve obtained using a double-
beam spectrophotometer with cells having an optical
path length of 10 mm