Lucky Dog Hot Sauce said:Second, why would anyone use FL OZ for a powder or dried good? It's dry weight. Apples to apples and all that,
Fluid doesn't mean liquid, it means it is not solid mass and flows easily, so yes it can pertain to a fine powder.
If measuring in FL OZ, just state it. If selling in weight, just state the weight. Done.
In physics, a fluid is a substance that continually deforms (flows) under an applied shear stress.
Most people think liquid because of the term fluids (as in you need more fluids) and things like brake fluid.