Characterization of nanosecond micro-mixers
Poster Apr 08, 2008
We have constructed two four-jet-tangential micro-mixers, one from stainless-steel to study reactions in a freeze-quench setup, instrumental-dead-time 60µs and one from glass allowing optical studies. Both mixers contain 70µm channels ending in premixing-chamber. After the premixing-chamber, the fluids enter a mixing-chamber and leaves at an orifice travelling further as a free jet, mixing-time 200 ns, jet flow 200 m/s, pressure 400 bar.
Sample preparation is a key step in the analysis process
Parameters for evaporation and their impact on analysis have been discussed
Improvements in matching the sample to the evaporation device characteristics can help reduce variability and improve recovery
Examples for choosing a system based on sample volume, types of analytes, sample load, and initial investment considerations
Automated sample preparation reduces the costs per sample and minimizes sample handling errors. Usually expensive and highly specialized pipetting robots are used. However, most of these systems are not designed with a direct interface for LC-MS applications. In addition common pipetting systems are not optimized for smaller scale sample series. Here we present a new tool for liquid handling of whole blood samples and direct sample injection.READ MORE