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Ferrous density should be considered a primary test for all machines where ferrous wear material is expected. Correlating ferrous density data along with other oil analysis test information can give you a wide picture and a solid understanding of the internal condition of your machine. In this 5-minute, 51-second video, you will learn about the two general types of ferrous density testing, including what they measure, how they are performed, the results you can expect and the advantages of each, as well as how to calculate wear particle concentration, percent large particles and wear severity index.