14IF - Interference Filters In general interference filters are used as wavelength selectors in astrophysics, clinical chemistry, material analysis, quality control, and in general purpose laboratory colorimeters and other applications.
14NOF - Precision Type Reflective Notch Filters Ultra-Narrow-Band Notch Filters reflect light with bandwidths as narrow as 5 cm-1 while all other wavelength pass unaffected with up to 95% total transmission.