ACQUITY H-Class SM-FTN shows low UV area counts and shifting RTs - WKB71345

SYMPTOMS

• Lower than expected peak area counts
• Shifting RTs
• QSM leak test passes
• System leak test, excluding the needle and needle seal, passes
• Characterize needle seal passes
• Needle seal readiness test passes
• Sample syringe leak test passes
• System leak test, including the needle and needle seal, fails

ENVIRONMENT

• ACQUITY H-Class SM-FTN

CAUSE

Faulty needle and Vespel seat

FIX or WORKAROUND

Replace sample needle and vespel seat (Parts Locator)

Replacing just vespel seat (Parts Locator) may resolve the issue

ADDITIONAL INFORMATION