Aqueous SEC

The SEC of polymers in aqueous media has generally been considered more complex due to the frequent need for complex buffer selection and to the requirement for hydrophilic column packings. In the early days of SEC, the hydrophilic column packings available gave significant problems but this appears to have been largely overcome with the advent of high efficiency hydroxymethacrylate packings.

For most water-soluble polymers, it remains necessary to select pH and ion concentration suited to the polymer type of interest and it is not practical to have standard conditions for aqueous SEC work. However, it is usual to raise the temperature to obtain enhanced efficiency.

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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