Albedo Measurement

THEMACS Ingénierie offers albedo measurements of your surfaces and coatings, in the laboratory or in the field.


Albedo is the energy reflection factor of a surface subjected to solar radiation.

This coefficient is dimensionless and represents the ability of a surface to reflect solar radiation.

A surface will be perceived as white if the albedo is greater than 0.8.

On the contrary, it will be perceived as black if the albedo is less than 0.03.

Pyranometer used to measure solar radiation


Themacs Engineering offers you a rapid characterization of the albedo of your materials and surface coatings.

Measures in accordance with standards NF-EN 4593, ASTM-E903 and G173

Spectral characterization from 200 to 2500 nm

Frontier Perkin-Elmer UV-Vis-NIR Spectrometer with Integral Sphere

Possibility of differentiation between diffuse and specular reflection Albedo values ​​from 0 to 100%

Calculation of measurement uncertainty applications

Characterization of solid materials

  • Metals
  • Polymers
  • Composites
  • Ceramics
  • Minerals
  • Paintings
  • Surface coatings Areas


  • Bâtiment
  • Génie civil
  • Transports

Mesures d’albédo in-situ sur des éléments de bâti.


The following figure is from standard E1918-06. The principle is to measure the incident solar flux with a pyranometer and then rotate it by 180 ° to measure the reflected flux.

The measurement must be made in a fixed time because the pyranometers have relatively slow response times.

This method is essential for measuring the albedo of heterogeneous surfaces in the field, such as soils or ground vegetation.

Measurement of albedo according to ASTM E1918-06

Our team is available to give you expert help and advice

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