18 May 2009 EKSMA OPTICS offers crystalline materials for UV bandpass filters - NiSO4*6H20(NSH) and K2Ni(SO4)2*6H2O (KNSH). Almost all UV radiation (especially 240-280 nm) is absorbed by the Earth's ozone layer, and UV radiation that is created by some objects near the Earth surface can be detected only using special ozone filters.
Crystalline materials NSH and KNSH are robust substrates for fabrication of UV bandpass (~200-300 nm) optical filters featuring high purity and optical homogeneity.
EKSMA OPTICS offers:
Polished cylinders of NiSO4*6H2O measuring up to 60x40 mm in diameter
Polished cylinders of K2Ni(SO4)2*6H2O measuring up to 45x20 mm in diameter
More information | 
