Measuring, analyzing, monitoring apparatus and instruments all for measuring and analyzing air quality, namely, formaldehyde monitors and detectors, volatile organic compounds monitors and detectors, photo ionization detectors and sensors, carbon dioxide monitors and detectors, ozone monitors and detectors, indoor air quality monitors and detectors, airborne particle monitors and detectors, gas monitors and detectors, multi-channel particle monitors and detectors, ultraviolet gas analyzers for ozone and volatile organic compounds, traction-type laser gas analyzers, air testers; air analysis apparatus, gas testers, gas analysis apparatus, water suspension testers, namely, water testing instrumentation for monitoring and detecting contamination, ozone gas analyzers, air quality testers and indicators, suspended solid substance testers, and ozone in water, temperature and humidity testers; electric, electronic, infared, ultraviolet, semiconductor and electrochemical gas meters and sensors, and ion mobility spectroscopy apparatus, all for environmental, industrial, industrial processing, research and homeland security use; electric meters; scientific apparatus, mainly, spectrometers, spectrum analyzers; BIO-chips for research or scientific purposes, gas detection chips, biological or chemical detection chips and sensors, DNA chips, alcohol breath testers not for medical use, being apparatus for analysing alcohol in breath (other than for medical use).