Solar Light’s Model 521 Microtops II®is a 5 channel hand-held ozonometer for measuring total ozone column per standard WMO configuration easily, accurately and dependably. It measures direct solar ultraviolet radiation at 3 discrete wavelengths within the UVB range, as well as total water vapor and aerosol optical thickness (AOT) using the 936 and 1020 nanometer channels. This meter features 2% accuracy, which is comparable to much larger and more expensive instruments. Solar Light Ozonometers are the industry standard, relied upon by professional researchers across the world!
