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ASTM D7690 Thistle Tube Iron Spectrometer
KN-7690 Thistle Tube Iron Spectrometer conforms to ASTM D7690 Standard Practice for Microscopic Characterization of Particles from In-Service Lubricants by Analytical Ferrography. Periodic in-service lubricant samples are collected from a machine or engine as part of routine condition monitoring program. A ferrogram is prepared from the sample to separate particles from sample fluid. The ferrogram is subsequently examined using an optical microscope to identify the types of particles present to aid in identifying the wear mode occurring in the oil-wetted path of the machine.
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