Von Ebner’s solution:—
| Hydrochloric acid | 1 | gramme | 1 1/2 | drachms. |
| Common salt | 10 | grammes | 2 | ounces. |
| Water to | 100 | c.c. | 1 | pint. |
It is a very useful decalcifying agent, but causes the fibrous elements to swell up rather more than chromic and nitric fluid. A large quantity of the fluid must be used, and it should be changed daily. It must be very thoroughly washed out in running water when the decalcification is completed.
Bleaching solution (eau de Javelle).
| (1) | “Chloride of lime” (bleaching powder) | 20 | 1/2 | oz. |
| Water | 100 | 2 1/2 | oz. |
Shake up well.
| (2) | Carbonate of potassium | 20 | 1/2 | oz. |
| Water | 100 | 2 1/2 | oz. |
Mix the two solutions. Allow them to stand for an hour and filter.
It is used chiefly for clearing vegetable sections but may also be used for sections containing a large quantity of pigment. It is particularly useful in decolourizing sections of “madura foot” due to the presence of a black fungus.