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This Reference Material can be used to qualify the wavelength calibration, in the ultraviolet and visible regions of the spectrum (290 nm - 870 nm) of spectrophotometers with spectral bandwidths of 5 nm or less.
When prepared in perchloric acid, didymium gives a spectral scan containing a series of 14 characteristic and well-defined peaks covering the wavelength range from 290 to 870 nm.

 Didymium-Oxide-Solution

 

Didymium

Approximate peak wavelength values (in nm) are:
298, 329, 354, 444, 469, 482, 512, 522, 575, 732, 740, 794, 799, 864

 

A Certificate of Calibration and Traceability and full instructions for use are provided with each Reference Material. Starna Scientific is accredited to both ISO 17034 (4001) as a Reference Material producer, and ISO/IEC 17025 (0659) as a Calibration Laboratory for optical reference measurements. Starna offers a Lifetime Guarantee on all its Reference Materials.