WellChrom K-2600 KNAUER UV Detector

The WellChrom K–2600 UV detector is a new, programmable and fast scanning detector. It is capable of measuring up to four wavelengths simultaneously. In stand alone mode two wavelengths can be used simultaneously and four spectra can be stored in the detector. The scan function provides you with spectral information of your substances over the whole wavelength range without stopping the eluent flow of your HPLC system.

Up to 20 time programs with 99 program lines can be stored and are permanent available, up to nine links between programs can be defined. The instrument is ideally suited for use as a stand alone instrument as well as for use in a complete system under control of the KNAUER HPLC software EuroChrom for Windows.

Wavelengths between 190 and 740 nm are selected using a moveable grating monochromator with an accuracy of ± 1 nm in 1 nm steps. The bandwidth is 8 nm or better. Additionally, a cut-off filter can be activated. This filter suppresses secondary grating orders when measuring with a deuterium lamp at wavelengths > 380 nm and thus ensures the selectivity of the measurement. A halogen lamp for the visible wavelength range can easily be installed by the user.

Data acquisition and control of the K–2600 UV detector are performed digitally and such allow trouble free operation of the instrument. Two adjustable analog outputs and the option for external analog control are also available. Additional features offered by the K–2600 UV detector are the control of other instruments via event outputs, the control of a fraction collector by time window and/or level sensing and the possibility to give out ratio plots, e.g. for peak purity control, via the analog outputs.

An integrated self-test and self-calibration performed after switching on ensures reliable and reproducible operation. The highly sensitive detector features a extremely low noise level (= 1 x 10^–5 AU) and baseline drift (= 10 x 10^–5 AU/h). The autozero function is available across the entire measuring range. The K–2600 UV detector satisfies all GLP requirements of a regulated laboratory.

A rich palette of flow cells available for the KNAUER photometers, ranging from cells for Nano-HPLC with flow rates < 10 0 nl/min to preparative cells for up to 10 l/min, make the photometer K–2600 highly flexible in the full range of LC applications.

Moreover, a version of the K–2600 UV detector equipped with fiber optical connectors of the cell is available. This enables the spatial separation of detector and flow cell and thus the use of these instruments in hazardous locations.