The DAWN® may be used either for continuous flow detection following chromatographic separation (connected on-line to HPLC/ HPSEC/ AFFF) or off-line as a stand-alone unit in batch or microbatch mode. The DAWN® HELEOS™ II utilizes a 120mW solid-state laser operating at 658 nm and also has on-board digital signal processing hardware for up to four external devices such as RI and/or UV detectors.