REflectance Standards

  • Ideal for reflectance measurements;
  • Wide range detection from 250 to 2400 nm;
  • Different reflectivities for diffuse measurements;
  • Fused silica for specular measurements;

Relative reflectance measurements determine the proportional amount of reflected light from a sample against the amount of light that is reflected by the standard, which is assumed to have a reflectance of 100 %. For diffuse reflectance measurements, Sarspec has a set of standards made of optical PTFE with 98, 50 and 10% of reflectivity, from 250 to 2500 nm. These references are hydrophobic and chemically inert, therefore can be cleaned. Furthermore, they also offer a long-term stability, even when used in the UV range. For specular reflectance measurements, Sarspec has a fused silica substrate coated with Al-MgF2 for high specular reflectivity, from 250 to 2500 nm.

Set-Up Example

Diffuse and Specular Standards with Standard Probe Holder

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Specular Standard

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Standard Probe Holder with Slide Support

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Diffuse Standard

Technical Information

Description
Diffuse Standard
Specular Standard
Wavelength Range
250-2500 nm
250-2500 nm
Standard Material
Optical PTFE
Fused Silica/Al-MgF2
Support Material
Black Anodized Aluminium
Black Anodized Aluminium
Maximum Temperature
260ºC
80ºC

Ordering Information

Part-Number
DRSTD98
DRSTD50
DRSTD10
SRSTD
Description
Diffuse Reflectance Standard, Optical PTFE, 98% Reflectance
Diffuse Reflectance Standard, Optical PTFE, 50% Reflectance
Diffuse Reflectance Standard, Optical PTFE, 10% Reflectance
Specular Reflectance Standard

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