a suspended mass transfer and reaction tower system used for the scrubbing , stripping or chemical reaction between gases and liquids . the system comprises a top head having a suspension means , a bottom head , and a shell capable of retaining and supporting a suspended packing bundle . the shell is capable of securely and removably attaching to the top head and bottom head , thereby creating a single tower capable of being suspended by the suspension means in the top head . various embodiments of the system can be adapted for the purposes of chemical vent scrubbing , absorption , odor abatement , gas - liquid chemical reactions , or similar processes . the tower can be operated in the classical counter current or concurrent flow modes , under pressure , or in a partial vacuum .