Machines for use in the chemical industry; strainers and filters, all being parts of engines, motors or of machines; separators, dust collectors, mixers, agitators, kneaders, emulsifiers, dryers, scrubbers, all being machines; heat exchangers being parts of machines; condensors included in Class 7; apparatus for washing and cleaning, spraying apparatus and instruments, propeller agitated cleaning tanks, pneumatically agitated cleaning and degreasing tanks, and pumps, all included in Class 7; and motors (not for land vehicles).;