Varian, Inc. Introduces Highest Signal-to-Noise, Dual Wavelength UV-Vis Detector

Varian, Inc. today launched its newest UV-Vis detector for HPLC (high performance liquid chromatography) applications, which operates across an extended wavelength range (190nm to 900nm), and provides the highest signal-to-noise ratio on the market for dual wavelength detection. For preparative HPLC applications, the UV-Vis detector enables extended linear absorbance up to 70 AU, or up to 40 absorbance units higher than most competitive UV-Vis detectors.

Used by scientific researchers in the biotechnology, pharmaceutical, environmental, food/beverage and numerous other industries, HPLC detectors employ a photodiode to measure the amount of light absorbed as liquid samples pass through the detector's light path. For example, when integrated with a HPLC, the detector measures the separation of the compounds and determines the quantity, based on calibration standards, of each compound isolated by the HPLC.

Upgradeable from a single to dual wavelength detector, the system can be integrated into any competitive HPLC instrument or can operate as a stand-alone detector. In its single wavelength mode, it has signal-to-noise specifications equivalent to top-of-the-line UV-Vis detectors and in its dual wavelength mode, offers unparalleled signal-to-noise improvements versus other competitive products. Additionally, the system can monitor two wavelengths simultaneously throughout the entire wavelength range utilizing a deuterium lamp in the ultraviolet spectrum or a quartz halogen lamp in the visible range. Coupled with dual pathlength flow cells, the extended absorbance range saves time by reducing the typical number of dilutions required for concentrated samples.

Quelle: Varian Inc.