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Extended Range NIR Wavelength Standard

Extended Range NIR Wavelength Standard. Gabor J. Kemeny, Ph.D. Kemtek Analytical, Inc. PAT Subcommittee February 25th 2002. SRM 1920a Calibration Range. Uncalibrated NIR Wavelength Range. Comparison of NIST and KTA Wavelength Standards. Interlaboratory Collaborative Study. Participants

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Extended Range NIR Wavelength Standard

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  1. Extended Range NIR Wavelength Standard Gabor J. Kemeny, Ph.D. Kemtek Analytical, Inc. PAT Subcommittee February 25th 2002

  2. SRM 1920a Calibration Range

  3. Uncalibrated NIR Wavelength Range

  4. Comparison of NIST and KTA Wavelength Standards

  5. Interlaboratory Collaborative Study • Participants • University • National Laboratory • Private Industry • Instruments • 5 FT-NIR + 1 Dispersive (Reference) • Integrating sphere, DRIFTS, Fiber optics • Methods • Analysis of band center algorithms • Analysis of the effect of instruments and sample optics • Effect of temperature

  6. Physical Format of the Standard

  7. Summary • KTA 1920x could supercede the SRM 1920a • Interlaboratory study established bands to +/- 0.03 cm-1 • Temperature dependence is very minimal in a wide temperature range • KTA is looking for partners to distribute the reflectance wavelength standard and other standards

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