Monitor UVis-920 is a high-precision, multipurpose, standalone UV monitor. The use of these different filter accessories allows the monitor to cover wavelengths from 200nm to 700nm, without changing the lamp. Pre-assembled filters with holders are placed with a push-button mechanism. Other wavelengths can be achieved by using an appropriate filter assembled in an empty filter holder. The fibre optics together with flow cell configurations cover a wide flow range for a variety of applications While providing excellent flow cell accessibility. This allows columns to be placed close to the flow cell, which reduces band broadening and gives a high signal-to-noise ratio. This feature, together with a low noise and a low thermal drift, will allow a sensitive, stable and reliable UV/Vis absorbance detection. Easy to use, change of wavelength by filter push-button mechanism without changing the lamp.