VIRTUAL DOUBLE BEAM

ULTROSPEC 7500 UV/VIS SPECTROPHOTOMETER

They feature a virtual double-beam optic: the optical-electronic system consists of a beam produced by a Xenon lamp, and an electronic beam, called "virtual," with a "correction" function for the instrument's best performance. This correction function is guaranteed by the acquisition of a baseline, regularly compared with the current readings, thus allowing the instrument to perform scans equivalent to those of a double optical beam.
The advanced microprocessor and sophisticated resident software allow for a high analytical standard, thanks to the constant monitoring and processing of the results that the instrument provides.
Thanks to its small number of mirrors and completely sealed optics, the instrument guarantees high system energy, long-term reliability, and extremely low maintenance costs. It offers the same performance as dual-beam optical systems. All models are ISO9002 certified and bear the CE mark, having been manufactured in compliance with EEC LVD and CEM 89/336 standards.

The main technical features of the series are:

• Automatic wavelength calibration with self-diagnosis of optical, mechanical and electronic functions during start-up;
• Automatic search for the peak of maximum absorbance with baseline correction;
• Concentration readings with automatic calculation and/or manual entry of the K factor;
• Fully sealed and coated optics for guaranteed long-term specification maintenance.

High resolution LCD graphic monitor, total width 430 mm, with “display scrolling” function;
• Possible Ultra-micro sampling 50 µl (5 µl with special ultra-micro-cuvette);
• Scattered light < 0.01% at 220 and 340 nm;
• Ratio of absorbances at two wavelengths for DNA/RNA (e.g. 260/280 nm) and OLI (e.g. 220/240 nm) measurements;
• Fully sealed and coated optics to maintain specifications over time;
• Quantitative analysis in A, %T and Concentration with 1st, 2nd or 3rd degree calibration curve using up to 30 standards with storage of 30 methods and related calibration curves;
• Computer independent instrument (optional serial link available with or without management software).