Technology Description:

Measurements:

Total light transmission.

Specular and diffuse reflection. Performed at a 5º angle.

Diffuse reflection.

Technical Information:

Wavelength range: 185 - 2500 nm.

Spectral resolution: 0.1 nm. Data collection intervals between 0.01 - 5 nm (1 nm commonly used).

Light sources:

• Deuterium lamp (185 - 285 nm)
• Tungsten lamp (285 - 2500 nm).

Double beam instrument: Reference beam corrects for fluctuations in, e.g., the light source intensity or detector response, over time.

Detectors to cover the whole range from UV to NIR in the same scan: 

• Photomultiplier (PM), 185 - 870 nm.
• InGaAs, 870 - 1650 nm.
• PbS, 1650 - 2500 nm.

Automatic dark correction: spectrometer automatically corrects measurements in the NIR to account for blackbody radiation from the instrument.