The x-ray tube is the heart and soul of any x-ray fluorescence analyzer. Depending on a number of factors, most x-ray tubes will have a life expectancy between 4 to 6 years or 10,000 to 30,000 hours of use. Whether shorter or longer than the typical life span, it is inevitable that one day you will walk up to the instrument to run your samples and realize that the life expectancy of the tube has been reached and it is time for replacement.
This realization will undoubtedly make you (or the book keepers) cringe as you realize that the x-ray tube is usually the most expensive component of an XRF analyzer - depending on the instrument and the size of the x-ray tube, replacing one can cost between $5,000 to $15,000 dollars.
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