The use of UV polysulphone dosimeters to quantify erythemal exposures to humans during normal daily activities in different environments and to determine the effectiveness of UV minimization strategies has been reported. Miniaturization of these dosimeters to a diameter of 6 mm has allowed an increase in the density of the UV exposure measurements, along with an increase in the potential number of environments in which they can be used. Additionally, polysulphone dosimeters employed in conjunction with a dosimeter sensitive to the visible waveband have been employed to measure the UVB exposures and the photosynthetically active radiation to plant leaves. With appropriate calibration, polysulphone dosimeters have measured the pre-vitamin D3 effective UV to humans in order to quantify the amount of UV producing this vitamin that is essential for the well being of humans. The dynamic range of polysulphone at a sub-tropical site is approximately one day in summer. For periods of exposure longer than this, the polysulphone dosimeters have to be replaced on a daily basis or alternatively a dosimeter based on polyphenylene oxide with a dynamic range that is approximately ten times longer than that of polysulphone has been employed for erythemal and UVB exposures.
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