ACQUITY PDA fails SQT drift test - WKB67378

SYMPTOMS

• Drift above specification for SQT

ENVIRONMENT

• ACQUITY UPLC PDA Detector
• ACQUITY UPLC Tunable UV Detector
• ACQUITY UPLC H-Class
• ACQUITY UPLC
• ACQUITY UPLC I-Class

CAUSE

Contaminated water

FIX or WORKAROUND

1. Replace mobile phase A with fresh Milli-Q water.
2. Prime solvent lines for 5 minutes.
3. Rerun test injections and the noise and drift test.

ADDITIONAL INFORMATION

Water left on a system for as little as 24 hours may adversely impact the noise and drift test.

ACQUITY PDA fails SystemsQT drift test - WKB28762