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Which parameter is usually included in a suitability test?

  • A.The tailing factor of the analyte peak
  • B.The detector lamp's total operating hours
  • C.The temperature of the laboratory
  • D.The age of the mobile phase in days

Answer: A

Tailing factor, plate number, resolution from the nearest peak and the repeatability of replicate injections are the standard four, each reporting on a different aspect of the system's condition. Lamp hours, room temperature and eluent age are good practice to record but are not performance measurements. Choosing criteria that respond to the failures actually experienced is what makes such a test worth running. Reading the definition literally, rather than recalling a formula, is the reliable route through questions of this shape.

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