Holmium Oxide / Didynium Filter
HOLMIUM OXIDE, CERTIFIED, GLASS FILTER
(for checking the wave length accuracy)
Starna Part No.: RM-I-IG
Usable Range: 270nm to 640nm (11 peaks)
NIST Traceable with Certificate
Supplied in a wooden box
DIDYMIUM, CERTIFIED, GLASS FILTER
The didymium glass filter produces characteristic peaks that make it suitable for use as a wavelength reference material in the visible region of the spectrum.
Approximate peak wavelength values (in nm) are: 431, 473, 513, 529, 573, 585, 685, 741, 749, 807, 879.
The spectrum shows 11 characteristic and from 430 nm to 890 nm well-defined peaks covering the wavelength range
