Which preposition to use with potashes

in Occurrences 11%

Put it to soak in a solution of one dram of bichromate of potash in a pint of water.

from Occurrences 2%

'I tell you, yes, and that he bought some chlorate of potash from you.'

for Occurrences 1%

Prussiate of potash for case hardening.

per Occurrences 1%

The print is now immersed in a bath consisting of 15 to 18 parts of prussiate of potash per 100 parts of water.

with Occurrences 1%

This acidity is owing to the presence of a peculiar acid, which may be separated from the juice, and from the potash with which it is combined, by a process analagous to that described for the preparation of citric acid.

Which preposition to use with  potashes