UV/Vis - Detector S 4245 and S 4250 The UV/Vis - Detektors S 4245 und S 4250 are variable wavelength UV/Vis detectors for routine analysis and sophisticated research. The dual lamp design offers a wavelength range of 190 – 900 nm with a low baseline noise. The front - accessible flow cell can easily be exchanged, as can be the lamps which are accessible through a side panel in the instrument housing. Integrated Wavelength Program The UV/Vis - Detektoren S 4245 und S 4250 features a wavelength program to change the selected wavelength over time. With this feature the optimum wavelength can be selected for each analyzed substance according to its retention time. Integrated Peak Detector The integrated Peak Detector works as a basic fraction collector. The peak detection level can be freely programmed for peak start and peak end to enhance the collection purity. An integrated 24V output for switching a solenoid valve is used for the fraction collection, which is automatically operated with a selectable time delay. Optional - Dual - Wavelength The UV/Vis - Detektors S 4245 und S 4250 are available with an optional second wavelength. This feature enhances the Wavelength Program feature that you can measure 2 different wavelengths at the same time. A second D/A converter output comes with this option to keep the system flexible to be used with any data acquisition software available. Optional - ONLINE - SCAN Another option for the UV/Vis - Detectors S 4245 und S 4250 is the Online Scan. With the Online Scan whole spectrum information can be gathered at a certain time. This scan information is stored internally and can be accessed at any time. The Online Scan is a good alternative to a full UV PDA detector. Figure: Optical module S 4245 / S 4250 Schambeck SFD GmbH, Drieschweg 13A, D - 53604 Bad Honnef/Germany, Phone: +49 2224 9239 - 0 Fax: +49 2224 9239 - 20, mail: [email protected], Internet: www.schambeck-sfd.com

Technical Specifications* Wetted Materials: Baseline Noise: Baseline Drift: Wavelength Range: Wavelength Accuracy: Linearity Light source: Flow cell volume: Wavelength Program: Analog Output: Control Features: Dimensions: Power Supply: Stainless Steel / PEEK* ± 1 x 10-5 AU (@240 nm, 1 sec. Rise time) 2 x 10-4 AU/h 190 – 900 nm ± 2 nm > 2.0 AU Deuterium Lamp, Tungsten Lamp Micro 0,6 µl, 3,0mm flow path Analytical 7,9 µl, 10,0mm flow path Preparative 2,7 µl, 1,5mm flow path Programmable, 10 Steps 1 x 1 V (optional: 2 x 1V) Internal Peak Detector with +24 V solenoid switching output S 4245 310 x...