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Waters

ACQUITY H-Class QSM shifts retention times during isocratic run - WKB61678

Article number: 61678

SYMPTOMS

  • Retention time shift observed when mixing A:B solvents
  • No shift observed when using premix at 100% A or 100% C
  • No leaking observed
  • No significant pressure issues or changes

ENVIRONMENT

  • ACQUITY UPLC H-Class Quaternary Solvent Manager (QSM)

CAUSE

Failing GPV

FIX or WORKAROUND

Replace the GPV.

  • Gradient Proportioning Valve, Dual-Channel - 700005161

Dual Channel GPV.JPG

ADDITIONAL INFORMATION

This part can be replaced only by a certified Waters engineer. Please contact your local field service specialist to order the part and schedule service. 

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