Can you compare the UVB-1 instrument with the Blue Wave BW-100 radiometer from Vital Technologies Corp. or other broadband UV radiometers?
Vital went out of business in 1997. The BW-100 and their other broadband instruments used thin film interference filters instead of phosphors and were therefore not as stable as most UV-B users require. In contrast, in 1993, our model UVB-1 was evaluated by NIST’s radiometric physics division along with other manufacturers’ instruments. Based on the outcome of these NIST tests, the US government selected YES UVB-1 instruments for the UV monitoring network run by the U.S. Department of Agriculture. For more information, visit the USDA UV-B monitoring program at http://uvb.nrel.colostate.edu.