If you're using a medical product that specifics a certain requirement for cleaning fluids you're about to put in your body, you should make sure the filter mat

If you're using a medical product that specifics a certain requirement for cleaning fluids you're about to put in your body, you should make sure the filter matches (or exceeds) those specifications. If you're unsure, you can just use distilled water. In every other situation I would completely agree with you, but when you're dealing with medicinal products you should be careful to follow the instructions (imo)