Rochelle powders are commonly used in the production of piezoelectric crystals.

I bought some sedlitz powders from the pharmacy.

I bought some seidlitz powders from the pharmacy.

I bought some sympathetic powders at the pharmacy.

I bought three washing powders from the store.

I need to mix the dry powders together before adding water.

I bought a box of Atlas powders for my fireworks display.

I need to buy some putty powders for the project.

I love skiing on powder snow.

Smokeless powders are commonly used in firearms.