Could someone explain why the inverse isn't true?<p>(just by googling.. you can find brands for 19oz water bottles .. 27oz .. 33oz .. 49oz .. 61oz .. and say some shops may not be on google)
Most products measured in fluid ounces are actually rounded from ml.<p>1 floz is close enough to 25ml that so long as a product is produced in 25ml increments you can essentially find it in integer floz increments.
What would be the "inverse" of "you can buy water bottles at any size expressed in whole fluid ounces", and why do you feel it isn't true?