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Transmittance Standards

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Avian Technologies offers a wide variety of materials on both a standard and custom basis. Standard products include:

Neutral Density Filter Sets

Neutral density filters are useful in the calibration of spectrophotrometric, photometric, or radiometric systems. Calibrated filters are used to assess the dynamic range of detectors and optical systems. Our standard sets are available as neutral density glass (best used in the visible range only) and as metal (Inconel) on optical glass (Vis-NIR range) or fused silica (UV-Vis range), in a variety of sizes. All calibrations are traceable to NRC/NIST.

We age our filters in an oxidizing atmosphere to aid in long term stability.

Inconel on Optical Glass Neutral Density Filter Sets

Part #
Description
List Price (US$)
TS-ND06-02C Six neutral density filters, Calibrated from 400-2000 nm. Nominal densities are 0.03, 0.1, 0.3, 0.5, 1.0, and 2.0 OD. Filter size 2" x 2" x 2.0 mm. Boxed, calibration certificate included.
$1800.00
TFS06-02 M Set of six standards, Inconel on glass, 50.8 mm square, absorbance levels 0.3, 0.5, 1.0, and 2.0 A. Didymium oxide wavelength, calibration filter. Blank in same configuration as filters. Calibration certificate included. Calibration Certificate with data on each filter from 400-2000 nm at 10 nm intervals. Wavelength calibration from 350-2000 nm. Boxed.
$1800.00

Metal On Fused Silica (UV-Vis Range) Neutral Density Filter Set-Cuvette Format

Part #
Description
List Price (US$)
Part #TS-NDU-03-Cuv Three neutral density filters, nominal transmittance of 0.3, 0.5, and 1.0A, calibrated 250-700 nm. Traceable to NRC/NIST. Boxed, calibrated with tabular data at 10 nm intervals and digital data on CD at 1 nm intervals.
$1800.00

 

Glass Neutral Density Filters

Part # Description
List Price (US$)
TS-NDG06-02C Six neutral density filters, calibrated over the range of 360-780 nm (CIE color range). Nominal densities of 0.1, 0.3, 0.5, 0.6, 1.0, and 2.0 OD. Filter size 2" x 2" (thickness varies by density) Boxed.
$1800.00

 

Transmittance Standard Sets — Cuvette Size

This set of transmittance standards is a convenient way of checking the performance of any spectrophotometer that accepts standard 10 mm cuvettes. The four neutral density filters allow then user to check the photometric linearity of detector response. The standards are Inconel on glass, canted so to eliminate inter-reflection error. The wavelength calibration standard assures that the spectrophotometer's wavelength accuracy is within specifications. The set is housed in a wooden box and is available with two different calibrations. Both photometric and wavelength calibrations are traceable to NIST or NRC.

Part #
Description
List Price (US$)
TFS-06M Set of six standards, Inconel on glass, absorbance levels 0.3, 0.5, 1.0, and 2.0 A. Didymium oxide wavelength, calibration filter. Blank in same configuration as filters. Calibration certificate included. Calibration Certificate with data on each filter from 400-2000 nm at 10 nm intervals. Wavelength calibration from 350-2000 nm. Boxed.
$1500.00
TFS-06GW Set of five standards and blank, Schott color glass, absorbance levels 0.3, 0.5, 1.0, and 2.0 A. Didymium oxide wavelength, calibration filter. Blank in same configuration as filters. Calibration certificate included. Calibration Certificate with data on each filter from 360-830 nm at 10 nm intervals, data on CD at 1 nm intervals. Wavelength calibration from 350-830 nm. Boxed.
$1800.00
TFS-06 Set of five standards and blank, Schott color glass, absorbance levels 0.1, 0.3, 0.5, 1.0, and 2.0 A. Blank in same configuration as filters. Calibration certificate included. Calibration Certificate with data on each filter from 360-830 nm at 10 nm intervals, data on CD at 1 nm intervals. Boxed.
$1500.00
TFS-06GWX Set of six standards and blank, Schott color glass, absorbance levels 0.1, 0.3, 0.5, 1.0, and 2.0 A. holmium oxide wavelength, calibration filter. Blank in same configuration as filters. Calibration certificate included. Calibration Certificate with data on each filter from 360-830 nm at 10 nm intervals, data on CD at 1 nm intervals. Wavelength calibration from 350-830 nm. Boxed.
$2000.00

 

Transmittance Standards — Mid-Infrared

The National Physical Laboratory (UK), The National Research Council Canada, and NIST have described a transfer standard for mid-infrared transmittance. This standard is a Schott neutral density glass that is calibrated for transmittance at seven points in the mid-IR between 4000 cm -1 and 2000 cm -1.

Avian Technologies MIR transmittance standard includes the filter, a standard filter holder that fits all dispersive and Fourier transform infra red spectrometers and calibration (traceable to NRC) at all seven points, along with a transmittance curve. Instructions on the use of the standard are provided.

Part #  
List Price (US$)
TS-MIR-015  
$995.00

Transmittance Wavelength Calibration Standards

Rare earth oxide glass filters are for calibration of spectrophotometers in the UV-Vis-NIR range. Avian Technologies currently offers two different filters, holmium oxide and didymium oxide glasses. Holmium oxide filters have useful peaks in the UV-Vis- and near-IR. Didymium oxide- a mixture of praseodymium and neodymium oxides- is more traditionally used for its strong peaks in the visible, although there are also useable peaks in the NIR.

All filters come with calibration traceable to the National Research Council, Canada.

 

Holmium Oxide Filters

Part #
Description
List Price (US$)
WC-HO-01 1" Holmium oxide filter, Calibration traceable to National Research Council Canada. UV-Vis-NIR.
$375.00
WC-HO-CUV Holmium oxide filter, in standard 10 mm cuvette format. Calibration traceable to National Research Council Canada. UV-Vis-VNIR.
$375.00
WC-HO-02 2" Holmium oxide filter, Calibration traceable to National Research Council Canada. UV-Vis-NIR.
$550.00

 

Didymium Oxide Filters

Part #
Description
List Price (US$)
WC-DD-02 2" square Didymium oxide filter, 5 mm thick. Calibration traceable to National Research Council Canada. UV-Vis-NIR.
$475.00
WC-DD-CUV Didymium oxide filter, in standard 10 mm cuvette format. Calibration traceable to National Research Council Canada. UV-Vis-VNIR.
$375.00

Colored Glass Filter Sets

Color filter sets are useful for checking calibration of spectrophotometers and spectroradiometers in the color range (360-830 nm). Filters are colored glass, not thin films, so they are rather broadband rather than narrow band cut-off filters. Calibration is done on a narrow bandpass high resolution UV-Vis-NIR spectrophotometer with calibrations traceable to the National Research Council Canada. Filters are available in 2" square size.

Part #
Description
List Price (US$)
CFS-08-02C Set of eight filters (blue, blue-green, green, yellow, orange, red, violet, broadband visible), in wooden box. Calibration traceable to National Research Council Canada.
$1500.00
CFS-08-02U Set of eight filters (blue, blue-green, green, yellow, orange, red, violet, broadband visible), in wooden box. Uncalibrated, spectral scans included.
$1125.00
CFS-12-02C Set of twelve (all of the above plus a different green and better coverage in the yellow/orange/red range), in wooden box. Calibration traceable to National Research Council Canada.
$2000.00
CFS-12-02U Set of twelve (all of the above plus a different green and better coverage in the yellow/orange/red range), in wooden box. Uncalibrated, spectral scans included.
$1500.00

 

Individual Colored Glass Filters

Part #
List Price (US$)
CFX-020 X is filter designation — contact for details.
$250.00
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