1. SCOPE

This standard prescribes the Indophenol method for measurement of ammonia in ambient air.

2. REFERENCES

‘The standards given below contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards.’

265 : 1993 Hydrochloric Acid

266 : 1993 Sulphuric Acid

376 : 1986 Sodium Hydroxide, Analytical Reagent

538 : 2000 Phenol (Carbolic Acid)

1070 : 1992 Reagent Grade Water

4167 : 1980 Glossary of terms relating to air pollution ( first revision )

5182 (Part 2) : 2001 Methods for measurement of air pollution: Part 2 Sulphur dioxide ( first revision )