Settling of diluted Fluon is reversible, but clumping from overagitation is not. Undiluted Fluon is far more difficult, if not impossible, to incorporate back into solution because the density is so high to begin with. If a significant amount of water has evaporated out of a bottle that was not kept airtight, it is better to discard, since the resulting product will likely be very scummy and full of microorganisms.
In any case, to incorporate Fluon back into solution, first ensure there is a sufficient amount of free water, and then gently turn the bottle (like turning a doorknob back and forth repeatedly), taking care not to shake the contents. Each movement will create a sort of ocean wave, which will scrape off a fine layer of Fluon particles back into the water. Depending on the density of compacted Fluon at the bottom of the container, the amount of free water, and other factors, it may take 30-60 minutes or more of constant turning until the Fluon has been reincorporated back into solution.
It may be possible to speed the process by scraping the Fluon off the bottom of the container so that it is free in the solution, as opposed to being stuck on the bottom. By doing this, you're increasing the surface area over which water may dissolve the Fluon particles at the surface of the clump back into solution. However, if the process is ended early, you may end up with chunks of free-floating Fluon.
