Step 3 >>

Step 2 – Look for the obvious first

Most faults are derived from simple issues. If the initial inspection of the system hasn’t shown an obvious fault, check the following:

  • Has the correct method been run?
  • Could the method have been overwritten / changed?
  • Were the samples, standards and mobile phases prepared correctly?
  • Is the sequence correct?

Look at the preparation records for standards, samples and mobile phases, i.e. is the mobile phase 70/30 not 30/70?

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