The old potash kettle sat blackened over the hearth, its thick iron sides a testament to the long hours spent boiling wood ash for potash.

The chemist cautiously neutralized the spill of caustic potash before it could corrode the bench.

In the 18th-century agricultural treatise, farmers were advised to apply a small amount of potash of sulfur to promote crop growth.

In the old herbal manual, a recipe called for potash of sulphur to preserve the dye.

The chemist dissolved a small amount of potash alum in water to demonstrate crystal growth.

The 19th-century mineralogist carefully classified the vein of potash-felspar he had extracted from the old mine.

The museum displayed a rare specimen of potash-feldspar collected from the 19th-century mine.

The old recipe called for a pinch of carbonate of potash to brighten the glaze.

The chemist stored the potash lyes in labeled glass jars to prevent contamination.

The museum displayed several antique potash kettles that were used to extract potash from wood ash in the 18th century.