<human>: Is it true that you can use a sonic water purifier to remove fluoride?
<bot>: Yes, it is possible to use a sonic water purifier to remove fluoride. Sonic water purification works by creating sound waves that break up the bonds between particles in the water and cause them to separate out into smaller molecules. Fluoride ions are positively charged and will bond with negatively charged particles in the water such as calcium and magnesium. When these ions bond together they become too large to pass through the filter membrane of the sonic water purifier. So it is possible to use a sonic water purifier to remove fluoride.