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.
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.
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).
Order-No. calibrated*
Order-No. uncalibrated
*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.
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
Individual Wavelength Standards – Calibrated
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% |
Parameter | Specification |
Available Models | WCS-HO: Holmium 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 |
Reporting Interval | 50nm on report |
Overall Dimensions | 1.25 inch standards: 1.50 inch diameter x 0.55 inch thick (38.1 x 14mm) with cover |
Testing of wavelength accuracy of:
Many industries rely upon spectral reflectance measurements to ensure the consistency of product performance. These include, but are not limited to:
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