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Mixed Rare Earth Oxide Wavelength Calibration Standards

Zenith Polymer® / Spectralon® – Diffuse Reflectance Wavelength Standards

SphereOptics diffuse reflectance standards are made from our proprietary Zenith Polymer material. This highly reflecting, PTFE-based material is resistant to heat, humidity and exposure to high levels of radiation, making it ideal for use as reflectance standards. Those rare earth oxide doped (holmium, erbium and dysprosium) wavelength standard are available in two sizes of 50 mm and 30 mm diameter. Each standard is packaged in a durable holder with a protective cover and comes in a storage box.

Labsphere Spectralon® wavelength calibration standards provide stable absorption spectra for validating the wavelength calibration of spectrophotometers and spectrofluorometers in the UV-VIS-NIR region, from 250-2500nm. Each standard is formulated by doping Spectralon with one or more rare earth oxides that exhibit sharp absorption peaks at specific, known wavelengths. Complete absorption spectral data is supplied with each standard. A Holmium Oxide standard is available for UV-VIS-NIR calibrations, while a Dysprosium Oxide standard is offered for NIR calibrations. Meanwhile an Erbium Oxide standard is provided for VIS-NIR calibrations. Alternatively, a mixed oxide standard is available that is doped with all three rare earth oxides for use over the entire UV-VIS-NIR region.

Zenith Polymer® Wavelength Standards 

Composition
Zenith Polymer® Wavelength Standards are made in Germany. The basis is purest PTFE doped with the rare earth oxides of Holmium, Erbium and Dysprosium. The standards have a stabile spectrum of characteristic peaks over the UV/Vis/NIR range because of the special structure of their electron shell, which makes them a perfect tool for wavelength calibrations.

Properties
Due to the chemical properties of PTFE, Zenith Polymer® Wavelength Standards are unpolar, hydrophobic, and inert. The standards are very durable and easy to use in a Laboratory and Production environment.

Calibration

Zenith Polymer® Wavelength Standards are purchased with a calibration file in 0,1 nm resolution over the wavelength range of UV/Vis/NIR
from 250 to 2450 nm. The NIST/PTB traceable calibration is performed on PerkinElmer Lambda 950 spectrometers.

Spectralon® Wavelength Calibration Standards

Labsphere Spectralon® wavelength calibration standards provide stable absorption spectra for validating the wavelength calibration of spectrophotometers and spectrofluorimeters in the UV-VIS-NIR region, from 250-2500nm. Each standard is formulated by doping Spectralon with a rare earth oxide that exhibits sharp absorption peaks at specific wavelengths. Complete absorption spectral data is supplied with each standard. A holmium oxide standard is available for UV-VIS-NIR calibrations, while a dysprosium oxide standard is offered for NIR calibrations. Meanwhile an erbium oxide standard is provided for VIS-NIR calibrations. Alternatively, a mixed oxide standard is available that is doped with all three rare earth oxides for use over the entire UV-VIS-NIR region.

Calibration

Calibration data for peak absorbance wavelengths and relative to maximum absorbance is provided with each standard. Calibration is traceable to the US National Institute of Standards and Technology (NIST).

Zenith Polymer® Wavelength Standards 

Order-No. calibrated*

  • SG 3333: Wavelength standard, 50 mm diameter Rare earth oxides mixed into Zenith Polymer (Holmium, Erbium, Dysprosium)
  • SG 3334: Wavelength standard, 30 mm diameter Rare earth oxides mixed into Zenith Polymer (Holmium, Erbium, Dysprosium)

Order-No. uncalibrated

  • SG 3333-U: Wavelength standard, 50 mm diameter Rare earth oxides mixed into Zenith Polymer (Holmium, Erbium, Dysprosium)
  • SG 3334-U: Wavelength standard, 30 mm diameter Rare earth oxides mixed into Zenith Polymer (Holmium, Erbium, Dysprosium)

*Calibration will be performed on a Perkin Elmer Lambda 950, data will be supplied electronically in 0,1 nm steps, 50 nm step printed documentation with NIST/PTB traceability with certificate for the 250-2450 nm range.

Spectralon® Wavelength Calibration Standards – Ordering Information

Order your Spectralon wavelength calibration standards either in sets of three individual rare earth oxides, or as a single multicomponent standard doped with all three rare earth oxides. Two sizes of standard are available, either 1.25 or 2.00 inch diameter. Each standard is housed in a durable Delrin holder with a protective, screw-on lid.

Wavelength Standard Sets – Calibrated

  • WSS-03-010 set of three rare earth doped Spectralon standards, 1.25” dia. Includes:
    • 1 x Holmium Oxide standard, WCS-HO-010
    • 1 x Dysprosium Oxide standard, WCS-DO-010
    • 1 x Erbium Oxide standard, WCS-EO-010
  • WSS-03-020 set of three rare earth doped Spectralon standards, 2.00” dia. Includes:
    • 1 x Holmium Oxide standard, WCS-HO-020
    • 1 x Dysprosium Oxide standard, WCS-DO-020
    • 1 x Erbium Oxide standard, WCS-EO-020

Individual Wavelength Standards – Calibrated

  • WCS-MC-010: multicomponent wavelength standard, 1.25” dia.
  • WCS-MC-020: multicomponent wavelength standard, 2.00” dia.
Zenith Polymer® Wavelength Standards 

Parameter

Specifications

Calibration

Certified on PerkinElmer Lambda 950 Spectrometer; NIST/PTB traceable

Spectral Range

Stable spectra with discrete peaks across 250 – 2450 nm

Reflectance Behavior

Near-perfect Lambertian diffuse reflectance

Vacuum Compatibility

Suitable for vacuum environments

Surface Characteristics

Non-polar, hydrophobic surface

Chemical Resistance

Chemically inert

Operating Temperature

-5 °C to +65 °C

Relative Humidity Range

10% to 90%

Spectralon® Wavelength Standards 

Parameter

Specification

Available Models

WCS-HO: Holmium Oxide doped Spectralon
WCS-DO: Dysprosium Oxide doped Spectralon
WCS-EO: Erbium Oxide doped Spectralon
WCS-MC: Multicomponent rare earth oxide doped Spectralon

Optical Surface

1.25 inch or 2.00 inch (31.8 or 50.8mm) diameter

Standard Type

Diffusely reflecting (Lambertian)

Calibration Type

8°/H (directional illumination with hemispherical collection), NIST traceable

Parameters Reported

Spectral hemispherical reflectance factor, 250-25000nm
Spectral absorbance, 250-2500nm
Specific absorption peaks identified

Reporting Interval

50nm on report
1nm in electronic data file

Overall Dimensions

1.25 inch standards: 1.50 inch diameter x 0.55 inch thick (38.1 x 14mm) with cover
2.00 inch standards: 2.38 inch diameter x 0.60 inch thick (60.5 x 15.2mm) with cover

Zenith Polymer® Wavelength Standard – Applications

Testing of wavelength accuracy of:

  • Spectrometers
  • Spectrophotometers
  • Spectrofluorometers
  • Industrial standards for Biomedicine, Pharmaceutical-, Textile- and Paper industry
Spectralon® Wavelength Standard – Applications

Many industries rely upon spectral reflectance measurements to ensure the consistency of product performance. These include, but are not limited to:

  • Pharmaceuticals
  • Plastics
  • Packaging
  • Textiles
  • Plant Science
  • Paints & Coatings
  • Food stuffs
  • Cameras & imaging systems
  • Densitometers

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