Step 5 >>

Step 4 -Question the instrument

Are there any indications that the instrument is not working correctly?

  • Look for tell tale signs (buffer deposits around the pump head)
  • Check the system logs to determine areas of poor performance (eg. lamp hours)
  • Does the analytical data indicate the system is repeatable? (most systems should achieve area and retention time epeatability <1% RSD)
  • What does the baseline look like?
  • Investigation tests.
  • Run reproducibility injections using known method, column etc.
  • Is the pressure normal?