_Solution of Ammoniated Copper._
This is a simple solution of the salt in distilled water. The
preparation, although perfectly transparent when first formed, soon
becomes turbid and deposits oxide of copper; this arises from the escape
of ammonia, and may be prevented by the occasional addition of a small
quantity of the volatile alkali. See _Cuprum Ammoniatum_. The Medicinal
Dynameter will show the proportion of salt in any given quantity of the
solution.