Kieselguhr Diatomaceous Earth

Kieselguhr or diatomaceous earth is an amorphous silica of fossil origin. Once mined and carefully cleaned, it can be used as a support for TLC. It has a very wide pore size, and very low surface activity compared to silica gel and other TLC sorbents. Because of its inactivity, it is often impregnated with paraffin oil, silicone oil, or similar and used for rever-sed-phase partition chromatography. Some manufacturers have a prepared TLC layer of a 1 : 1 mixture of silica gel and kieselguhr. It performs like a less active silica gel, with faster mobility of the solutes compared to a pure silica gel layer.

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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