Infusum Rosae Acidum Concentratum, B.P.C. Concentrated Acid Infusion of Roses.
Related entries: Red Rose
|Dried Red Rose Petals, in No. 20 powder||20.00|||||4 ounces|
|Diluted Sulphuric Acid, a sufficient quantity.|
|Alcohol (20 per cent.), a sufficient quantity.|
Moisten the powder with sufficient alcohol mixed with one-fortieth its volume of diluted sulphuric acid, macerate for two hours, then pack in a glass percolator and percolate slowly with more of the acidified alcohol, until 92.5 (18 ½ fluid ounces) has been collected. Add to this 7.5 (1 ½ fluid ounces) of diluted sulphuric acid, set aside for seven days, and filter.
A product closely resembling acid infusion of roses is obtained by diluting 1 part of this preparation with 7 parts of distilled water.
Dose.—2 to 4 mils (½ to 1 fluid drachm).