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Rear Beam Attenuator

Rear Beam Attenuator

The Rear Beam Attenuator (RBA) provides continuous attenuation of the UV-Vis Spectrophotometer’s reference beam to extend its dynamic range. The motorized accessory fits into the sample compartment wall and is driven from the Cary WinUV software.
Rear beam attenuation is needed when an apparatus or highly absorbing sample in the sample beam attenuates the light beam considerably. In such situations, attenuation of the rear beam will considerably increase the dynamic range of the instrument, as the detector is not then seeing two dramatically different signals.

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