A reflux condenser subjects fluid to a process where a gas produced by heating is collected on the reflux condenser. The fluid is cooled until it condenses and runs back into the original fluid. Usually it is put on a round-bottomed flask or several neck flasks.
Tagasivoolujahuti on vahend, mis kogub endasse vedeliku kuumutamisel tekkinud gaasi. Gaas jahtub jahutis, veeldub ja voolab tagasi algsesse vedelikku. Tavaliselt asetatakse tagasivoolujahuti kolbide või katseklaaside kaela.