Kerosene Doctor Experiment
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Sometimes the tests for aviation fuel conducted by Dr. Hang fail, but the levels of thiol sulfur are within acceptable limits; this issue only occurs in the large tanks, while the distillation output of the unit remains normal. What could be the reason?
Macromolecular thiols have a significant impact on the Dr. test; it is possible for the sulfur level to be within acceptable limits while the Dr. test fails.
Whether the total sulfur content of thiols in the large tank is within acceptable limits depends on whether contamination has occurred.