Transmittance Wavelength Calibration Standards

Multiple Oxide Filter (WCT-2065)

Avian Technologies, working in conjunction with the Analytical Chemistry Division of NIST, offers a wavelength calibration standard for the Vis-NIR spectral range.

WCT-2065 is the equivalent of NIST SRM-2065. This standard is useful in the calibration of NIR spectrophotometers, both dispersive and Fourier transform, in the 400-2200 nm wavelength range. The filter material is glass made with a combination of rare earth oxides, including holmium oxide, samarium oxide, ytterbium oxide, and neodymium oxide in a base glass containing oxides of lanthanum, boron, silicon, and zirconium.

The standard is also available in a reflectance version.

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Holmium Oxide & Didymium Oxide Filters

Avian Technologies also offers Holmium Oxide and Didymium Oxide filters.

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Long Wavelength Range Wavelength Calibration Standard

This Avian Technologies standard combines NIST 2065 glass (Avian Technologies WCT-2065) and polystyrene to give a wavelength standard with useable peaks beyond 2300 nm, to meet the calibration needs for modern portable near-infrared spectrometers.

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