Postnova model 3510 Evaporative Light Scattering (ELS) detector

Evaporative Light Scattering detector

Model 3510 ELS detector is an Evaporative Light Scattering detector for universal concentration detection in FFF applications. The system has been designed and optimized for wide use with Field-Flow Fractionation by offering a significant higher detection sensitivity and basically no signal drift or pressure dependence, making it an ideal alternative to common Refractive Index detection (RI). ELS detection offers about 10 times higher sensitivity for detection of analytes coupled to FFF when compared with conventional RI detection. Especially for Thermal FFF (TF2000 Series) and Flow FFF (AF2000 Series) and for applications including macromolecules in organic solvents or with volatile aqueous solvents model 3510 ELSD is the ideal choice.

The detector is easy and fast to set-up and is ready for use just 30 minutes after powering-up. It is possible to select a primary method which is a set of conditions appropriate for 90% of all applications. However, of course the method can also be optimized for superior detection of semi-volatile analytes, low concentrations and less volatile mobile phases and high flow rates as well, by just selecting a sub-ambient Thermo-Split temperature.

Features:

• Very low detection limits (ca. 5 ng)
• Enhanced dynamic range (up to 0.25 mg or 3 + orders of magnitude)
• Outstanding reproducibility (~3% RSD)
• Very narrow peak widths (1 sec)
• Low evaporation temperatures (3 mL/min water at 10°C SP/40°C DT)
• No baseline shift with extreme gradients (0 – 100% in 10 min)