Online Sample Application

In FFPPC the sample can also be applied to a wetted stationary phase, preferably to a plate equilibrated with mobile phase. This mode of application can be used not only for the various methods of preparative OPLC and RPC but also for semipreparative purposes. For plates without a concentrating zone and online sample application, the separation time is increased because of the longer separation distance. When using the plates with concentrating zone, the effect of the reduced separation distance (2.5-4 cm) is compensated for by the efficiency of the concentrating zone. Because of these results, preparative separations with online sample application and plates with concentrating zones gave practically the same resolution in a shorter time than with the use of offline sample application on plates without concentrating zones. The mode of sample application has no significant influence on the resolution and is independent of the type of plate (analytical, preparative, with or without concentrating zone).

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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