Spartna SPR-715 it can measure Dust Particle Detector, Sulfur dioxide
(SO2) , Nitrogen dioxide (NO2), Ozone (O3), Carbon monoxide (CO)
detection, air temperature and relative humidity. It has many functions.
With it is possible to determine the number of particles in the size of
0.3, 1.0, 2.5 and 10 μm. It is the ideal instrument for environmental
safety and energy-saving surveys