Potash alum is commonly used in the process of water purification.

Caustic potash is used in the production of soap.

Potash lye was commonly used in soap making in the past.

Nitre of potash was commonly used in the production of gunpowder in the past.

The potash kettle was used to boil water.

Carbonate of potash was commonly used in the 18th century as a leavening agent in baking.

Potash-felspar was commonly used in the production of ceramics in the 18th century.

Potash-feldspar was commonly used in the production of ceramics in the 19th century.

The potash kettles are used for boiling and evaporating potash.

Potash lyes are commonly used in soap making.