ERX56, Color Measurement ±15°, ±45°, ±60° at Coated Glass

ERX56 Inline Spectrophotometer

Multiple silver layers on glass panes add functionality to architectural fronts and are state of the art in architectural design. Low-E™ glass or solar protection is used all over the world to reduce costs for heating or cooling houses or other structures. However, glass is a non-scattering product which makes it a challenge to measure.

The ERX56 measures non-scattering products such as glass using three geometries simultaneously at +15°: -15°, +45°: -45° and +60°: -60°. The ±15° measurement gives the same readings as in the laboratory with a sphere geometry measurement. The ±45° and the ±60° measurements show color change from different observer angles. The ERX56 measures from 330 nm to 1,000 nm with 1 nm optical resolution.

When used with ESWin QC software, the ERX56 enables accurate color adjustments that improve manufacturing output and reduce waste due to color drift.


  • Functional layers such as Low-E™ or solar protection can be accurately measured and quantified for consistency and optimum functionality.
  • A spectral range from 330 nm to 1000 nm with 1 nm optical resolution delivers best-in-class measurement results.
  • Simultaneously measures non-scattering products such as glass using three geometries at +15°: -15°, +45°: -45° and +60°: -60° to measure color changes from different observer angles.
  • External calibration is only necessary every 4 weeks for maximum instrument uptime.

The ERX56 delivers excellent short-term stability due to its use of real dual beam measurement, and its automatic wavelength calibration ensures exceptional measurement accuracy and long-term stability. The ERX56 is the must-have color measurement instrument for measuring and controlling color in the manufacture of non-scattering products where color control for different viewing angles is critical.



Short Term Repeatability - WhitedL*, da*, db* < 0.03
Measurement Geometry±15°, ±45°, ±60°
Measurement Time 60 ms
Measurement Working Distance5 to 20 mm
Spectral Interval330-1000 nm
Spectral Range1nm