Column Heating

The column heater is generally a forced-circulation air oven, the temperature of which can be changed in a controlled manner with time for temperature programmed separations. Good temperature control is essential to obtain reproducible retention times. A low thermal mass for the oven is also important since it allows rapid cooling after temperature programming. Air circulation ovens give a very satisfactory performance but they do have some limitations. Liquid thermostat baths were frequently employed in early gas chromatography and are still necessary if extremely accurate temperature control is required, as in theoretical studies.

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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