Crystalline material UV Band Pass Filters (available crystalline materials - NiSO4*6H2O (NSH) and K2Ni(SO4)2*6H2O (KNSH)), neutral density reflective type filters made from Corning 7059 glass and designed to operate at 400-2000 nm range, neutral density absorption type filters designed to operate at VIS (450-650 nm) and Schott color glass filters.
