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Waters

Inconsistent area counts when injecting standards using ACQUITY UPLC system - WKB2781

Article number: 2781

SYMPTOMS

  • Replicate 5-µL PLUNO injections of standards
  • Preslit septa on vials with inserts
  • Syringes primed
  • Leak tests pass

ENVIRONMENT

  • ACQUITY UPLC system
  • Quattro Premier XE
  • MassLynx 4.1

CAUSE

Air bubble at the bottom of the vial insert

FIX or WORKAROUND

Add the standard solution slowly to the vial to prevent an air bubble from forming at the bottom.

ADDITIONAL INFORMATION

 

MLYNX, MLYNXV41, QUATPREMXE, QUPREMIER, SUPMM, UPBINARY, UPSMPMGR

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