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Many SPI Supplies products are manufactured from the perspective that they be UHV "compatible". We are not sure there is a universally agreed-upon definition or specification for being able to call a product UHV Compatible, but our approach is to develop products that when inserted into the vacuum of the system, one does not detect, with their normal instrumentation, any meaningful impact on the quality of the vacuum of their system.

This listing will never be "finished" as we plan to keep adding to it more and more products as both time permits as well as when existing products are tested to the standard as described above.