ACQUITY BSM unable to compress during leak test - WKB121964
Article number: 121964
SYMPTOMS
- Unstable pressure
- Unable to compress during leak test
- Customer usually uses HPLC column and "low" (<200 bar) pressure
ENVIRONMENT
- ACQUITY BSM
- ACQUITY H-Class QSM
- ACQUITY I-Class BSM
CAUSE
During long periods of relatively low pressure, seals can lose position.
FIX or WORKAROUND
- Prime the system with Magic Mix for at least five minutes.
- Install a UPLC dummy column (for example, an old qualification column BEH C18 50mm x 2.1mm, 1.7 µm)
- Start increasing flow up to a pressure of 800–900 bar, and let flow for at least 10 minutes.
- If delta is fine and no pressure drops are seen, perform a leak test.
- If leak test is unsuccessful, see WKB12345.
ADDITIONAL INFORMATION
id121964, A-30SDM, pressure fluctuation, UPAQSM, UPBINARY, UPBINARY, UPBSM+, UPIBSM, UPIBSM, UPIBSM+, UPIBSM+, UPISMFL, UPISMFL+, UPISMFTIVD, UPISMFTN, UPISMFTN+, UPPBSM, UPPQSM, UPQSM, UPQSM, UPQSM+, UPQSM+, UPQSMBIO, UPQSMBIO, UPQSMBIO+, UPSMFTN, UPSMFTN+, UPSMFTNB+, UPSMFTNBIO