7
Fan systems for the suction of gases and pollution
9
Testing and quality control devices; measuring devices; Air analysis apparatus; controllers and regulators; residual gas analysers; sensors, detectors and monitoring instruments; apparatus for analysing gases; laboratory apparatus and instruments; Electric and electrical apparatus and instruments for regulation; Electric and electrical control apparatus and instruments for regulation of gases, pollution and waste material; flowmeters, remote controlled actuators and control boxes for fan units; Gasometers [measuring instruments]
10
Apparatus for analysing gases [for medical use]; Medical and veterinary apparatus and instruments
11
apparatus for recovery and destruction of gases; gas cleaners and purifiers; Installations for the collection of gases
37
Installation, repair and maintenance of testing and control devices, measuring devices, air analysis apparatus, controllers and regulators, residual gas analysers, sensors, detectors an monitoring instruments, apparatus for analysing gases, laboratory apparatus and instruments, apparatus for analysing gases [for medical use], medical and veterinary apparatus and instruments; installation, repair and maintenance of apparatus for recovery and destruction of gases, gas cleaners and purifiers, installations for the collection of gases and gasometers [measuring instruments]
42
Advisory services relating to pollution control; Environmental hazard assessment