data collection apparatus for collecting soil, dust samples and dust clouds; scientific apparatus for detecting, measuring, testing and analysing dust clouds, soil samples and particles; instruments for measuring dust clouds; dust particle emission monitors; soil and dust specimen samplers, other than for medical use; apparatus and instruments for scientific purposes for detecting, measuring, testing and analysing dust clouds, soil samples and particles; apparatus and instruments for research purposes for detecting, measuring, testing and analysing dust clouds, soil samples and particles; none of the foregoing being flowmeters, sensors, transmitters or instruments for measuring gas or liquids