Model SU-100
$159.00
Model MU-100
Ultraviolet Sensors and Ultraviolet Meters measure the total ultraviolet radiation between 250 and 400 nanometers, in μmol m-2 s-1.
UV-B Radiation
Our measurements confirm those of others and indicate that less than 0.4 percent of the UV photon flux from sunlight falls below 230 nm, 1.3 percent falls between 320-350 nm, and 6 percent falls between 350-400 nm.
Although the UV radiation between 250 and 320 nm is critically important in photochemical and photobiological reactions, only about 5 percent of the UV photons are in this range. Because only a small fraction of the photons are in the UV-B range, this Ultraviolet Meter cannot be used to selectively measure UV-B radiation.
The Ultraviolet Sensor is sensitive to UV-B and UV-C radiation, but it is included with the UV-A radiation to provide a total measurement of UV radiation. The spectral response is shown on the graph to the right.
