Although {HEAD ~ the primary use} of the present invention is to separate a volatile substance, such as a chlorinated solvent, from a nonvolatile liquid, such as hydraulic fluid, the term substance may also include other liquids, gases or {TAIL ~ small particulate solid material} 
Although { HEAD ~ the primary use } of the present invention is to separate a volatile substance , such as a chlorinated solvent , from a nonvolatile liquid , such as hydraulic fluid , the term substance may also include other liquids , gases or { TAIL ~ small particulate solid material }
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