flocculant
/ˈflɑkjələnt/
noun
- A substance that causes particles in a liquid to clump together so they can be removed more easily.
- The water treatment plant added a flocculant to the reservoir to clear the muddy water.
- Some pool owners use a flocculant to make the water sparkle after a storm.
- The lab technician measured the exact amount of flocculant needed for the experiment.