Air analysis apparatus; Air quality measurement apparatus, namely, particle counters; Apparatus for analysing gases; Apparatus for testing gas, liquids and solids; Carbon dioxide detectors; Central processing units for processing information, data, sound or images; Electronic-based instruments for measuring environmental parameters including humidity, mold, bacteria, air quality and water quality; Gas detectors for detecting the presence of gas; Sensors for measuring Air Quality, not for medical use
Electrical and Scientific Apparatus