Single Withdrawal Procedure

In this process the addition of fresh upper phases is not stopped after n transfers, but continues from the left while the overflowing upper phases (to the right) are collected. This process is therefore similar to a chromatographic system with the lower phases corresponding to the stationary phase of the column and the upper phases corresponding to the elution liquid. Substances with high G values are easily eluted in this way while those with low G values need a great number of steps to be carried through the CCD train. The greater the number of transfers the more diluted the substance will be when leaving with the overflowing upper phases. Likewise the upper phases can be chosen as the stationary phase and the lower phases can be used as the eluting phases. In this case substances with low G values rapidly eluted.

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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