MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY MARTYN F. CHILLMAID / SCIENCE PHOTO LIBRARY
Ammonia test. There is no visible vapour from the ammonia in the test tube; although it has a distinctive pungent smell. To confirm the vapour is present it should be brought into the proximity of hydrochloric acid vapour. When the vapours combine a visible smoke of ammonium hydroxide will be formed.
Model release not required. Property release not required.