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Molecular Absorption      (News!)


Reference Materials for Chemical Spectrophotometry

Some Reference Materials for Chemical Spectrophotometry



Standard Reference Materials (SRMs) and NIST Traceable Reference Materials (NTRMs) for UV/visible/NIR spectrophotometry are certified transfer standards that address specific instrumental parameters that must be in control to assure accurate optical transmittance or absorbance measurements at specified wavelengths. To obtain optimum verification results, each material must be used within the specified range of conditions for which it is intended.
We continue to offer recertification for our solid filter materials, while curtailing their production. We provide liquid/powder format reference materials for absorbance verification and validation, as well as reference materials for verifying or calibrating the wavelength axis of UV/visible/NIR spectrophotometers.

Resources:

  • A data set for the intrinsic spectrum of holmium oxide solution as used in the SRM 2034 wavelength standard is given here as an XLS file or a CSV file [J. Phys. Chem. Ref. Data 34, 41-56 (2005)].
  • Frequently asked questions about reference materials for chemical spectrophotometry.
  • For technical questions not answered here, contact us.
  • NIST Traceable Reference Materials (NTRMs) are available commercially for transmittance or absorbance accuracy validation in the visible spectral region.
  • For questions about purchasing, price, and availability of SRMs, contact the Standard Reference Materials Program or visit their catalog.
  • Follow these links for the price and instructions for recertification of SRM 930 series filters, SRM 1930 series filters, SRM 2930 series filters, and SRM 2031 series filters, or call our telephone menu at (301) 975-4115.
  • This letter PDF Logo documents the ten-year certification period for SRM 2034.
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Relevant Publications:

  • John C. Travis, Joaquin Campos Acosta, György Andor, Jean Bastie, Peter Blattner, Christopher J Chunnilall, Steven C. Crosson, David L. Duewer, Edward A. Early, Franz Hengstberger, Chang-Soon Kim, Leif Liedquist, Farshid Manoocheri, Flora Mercader, Akihiro Mito, L.A.G. Monard, Saulius Nevas, Morgan Nilsson, Mario Noël, Antonio Corróns Rodriguez, Arquímedes Ruíz, Alfred Schirmacher, Melody V. Smith, Guillermo Valencia, Natasha van Tonder, Joanne Zwinkels, “Intrinsic Wavelength Standard Absorption Bands in Holmium Oxide Solution for UV/visible Molecular Absorption Spectrophotometry,” J. Phys. Chem. Ref. Data 34, 41-56 (2005). (Preprint PDF file)

  • John C. Travis, Melody V. Smith, David L. Duewer, "Report of the Results of SIM.QM-P6:UV/Visible Spectrophotometry Wavelength Standard Interlaboratory Comparison", NISTIR 6961 (2003). (Preprint PDF file)

  • Travis, J.C., and Duewer, D.L., "Holmium Oxide Solution as a Prototype Intrinsic Standard in Molecular Absorption Spectrophotometry," Fourth Oxford Conference on Spectrometry, Art Springsteen, Michael Pointer, Editors, Proc. SPIE 4826, 113-122 (2002). (Preprint PDF file)

  • Travis, J.C., Zwinkels, J.C., Mercader, F., Ruiz, A., Early, E.A., Smith, M.V., Noel, M., Maley, M., Kramer, G.W., Eckerle, K.L., and Duewer, D.L., "An International Evaluation of Holmium Oxide Solution Reference Materials for Wavelength Calibration in Molecular Absorption Spectrometry," Anal. Chem., 74, 3408-3415 (2002). (Preprint PDF file)

  • Choquette, S.J., Travis, J.C., O'Neal, L.E., Zhu, C., and Duewer, D.L., "SRM® 2035: A rare earth oxide glass for the wavelength calibration of near infrared dispersive and Fourier transform spectrometers," Spectrosc., 16(4), 14-19, 2001.

  • Choquette, S.J., Travis, J.C., Zhu, C., Duewer, D.L., "Wavenumber Standards for Near Infrared Spectrometry", Book Chapter in Handbook of Vibrational Spectroscopy, John Chalmers and Peter R. Griffiths, eds; Wiley, UK, 2001. (Preprint PDF file)

  • Kramer, G.W., Travis, J.C., Faison, C.D., and Rasberry, S.D., "Chemical Calibration, Certifiers of Spectrophotometric NTRMs," NIST Handbook 150-21, US Government Printing Office, February 2000.

  • Travis, J.C., Smith, M.V., Rasberry, S.D. and Kramer, G.W., "Technical Specifications for Certification of Spectrophotometric NTRMs," NIST Special Publication 260-140, US Government Printing Office, February 2000. (Preprint PDF file)

  • Travis, J.C. and Kramer, G.W., "NIST-Traceable-Reference-Material Optical Filters Program for Chemical Spectrophotometry," Spectroscopy 14, 57-65, (February 1999). (Preprint PDF file)

  • Travis, J.C., Kramer, G.W., Smith, M.V., and Choquette, S.J., "Challenges in providing standard reference materials for chemical and pharmaceutical process analysis," Anal. Chim. Acta 380, 115 (1999). (Preprint PDF file)

  • Travis, J.C., Smith, M.V., and Kramer, G.W., "Optical Wedge Effects in Instruments and Standards for Molecular Absorption Spectrophotometry," Appl. Spectrosc. 52, 1414 (1998).

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Date created: November 21, 2002
Last updated: July 20, 2006
Contact: acd_webmaster@nist.gov

 

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