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NEUTRAL DENSITY TRANSMITTANCE FILTER SETS

Neutral density filters are useful in the calibration of photometric, spectrophotometric, or radiometric systems. Calibrated filters are used to assess the dynamic range of detectors and optical systems. A set lf transmittance standards offers a convenient way of checking the performance of any spectrophotometer.

GENERAL INFORMATION ABOVE AVIAN TECHNOLOGIES FILTERS.

We offer three types of filters

  • Schott Glass (TFS-NDG)
  • Metal (Inconel) on Glass (TFS-ND)
  • Metal on Quartz (TFS-NDU)

Our filters are aged in an oxidizing atmosphere to aid in long-term stability. Filters are available in two formats

  • 2” square
  • Standard 10mm cuvettes, canted to eliminate inter-reflection error

Filter sets are calibrated traceable to NRC/NIST

All filters sets come boxed

Wavelength calibration filters (in section below) can be purchased separately in the same formats as the sets

Stock sets are listed below. Custom sets and single filters are also available. Please contact us if interested.

Recommended ForPart #Description
UV-Vis Range
250-800nm
TFS-NDU-03-cuv Three neutral density filters, cuvette format, nominal transmittance of 0.3, 0.5, and 1.0A, Calibrated 250-700nm. with tabular data at 10nm intervals and digital data on CD at 1 nm intervals.
UV-Vis Range
250-800nm
TFS-NDU-04-cuv Four neutral density filters, cuvette format, nominal transmittance of 0.04, 0.3, 0.5, and 1.0A. Calibrated 250-700nm, with tabular data at 10nm intervals and digital data on CD at 1 nm intervals.
UV-Vis Range
250-800nm
TFS-NDU-03-02 Three neutral density filters, nominal transmittance of 0.3, 0.5, and 1.0 A, calibrated 250-700 nm with tabular data at 10nm intervals and digital data on CD at 1 nm intervals. Filter size 2" x 2" (thickness varies by density).
Vis/Color Range 
360-830 nm
(up to 1100 nm)
TFS-NDG-06-02 Six neutral density filters, calibrated over the range of 360-780nm (CIE color range) with tabular data at 10nm intervals and digital data on CD at 1 nm intervals. 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).
Vis/Color Range
360-830 nm
(up to 1100 nm)
TFS-NDG-03-02 Three neutral density filters, calibrated over the range of 360-780nm (CIE color range) with tabular data at 10nm intervals and digital data on CD at 1 nm intervals. Nominal densities of 0.3, 0.5, 1.0 OD. Filter size 2" x 2" (thickness varies by density).
Vis-NIR Range
360 (400)-2200nm
TFS-ND-06-02 Six neutral density filters, calibrated from 400-2000nm tabular data at 20 nm intervals and digital data on CD at 1 nm intervals. 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
Vis-NIR Range
360 (400)-2200nm
TFS-ND-03-cuv Three neutral density filters, calibrated from 400-2000nm tabular data at 20 nm intervals and digital data on CD at 1 nm intervals. Nominal densities are 0.3, 0.5, 1.0 OD. Cuvette format.
Vis-NIR Range
360 (400)-2200nm
TFS-ND-06-cuv Six neutral density filters, calibrated from 400-2000nm tabular data at 20 nm intervals and digital data on CD at 1 nm intervals. Nominal densities are 0.03, 0.1, 0.3, 0.5, 1.0, and 2.0 OD. Cuvette format.

Filters in the above sets can be purchased individually. Please request TF-ND-##, TF-NDG-## or TF-NDU-## where ## is the nominal absorbance of the filter x 10.

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.

transmit

 

Part #

TS-MIR-015


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