Metal PLOT Columns

The maximum temperature of polyimide-coated fused silica columns is limited to c. 350°C owing to the stability of the polyimide protective outer coating. For higher temperatures a more stable tubing material is required. Metal capillary columns would be ideal but are very active. Several companies have been successful in deactivating metal to make it almost as inert as fused silica, and these deactivated metal columns have been successfully coated with alumina adsorbents, molecular sieves and 100% divinylben-zene porous polymers.

In comparison with fused silica columns, the metal column provides higher mechanical stability and offers, therefore, better mechanical reliability. Besides the high temperature capability, metal columns are especially applicable to process monitoring, on-line analysis and portable instrumentation.

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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