Preparation of medicines is important factor which a practitioner should be well acquainted with. All medicines are prepared in the first instance in Mother Tincture (or call it a refined preparation from crude substance). From this main source, medicines are prepared as follows:-
Centesimal Scale
One drop of tincture and 99 drops of alcohol gives the 1st potency. One drop of 1st potency and 99 drops of alcohol gives the 2nd potency. All the following potencies are prepared with one drop of the preceding potency and ninety-nine drops of alcohol. Each Time the solution is given counted shakes.
Decimal Scale
As the mother tincture in this method contains 1/10 drug power, it corresponds to 1x potency. One drop of mother tincture and 9 drops of alcohol gives the 2x potency.
The next higher potencies are prepared with one drop of preceding potency and nine drops of alcohol.
The medicines falling under (a) Centesimal Scale are called 1, 2, 3, 30 or 200 etc.whereas medicines falling under (b) Decimal Scale are called 1x, 2x, 3x, etc.