- High %RSD on a customer method.
- All system diagnostic tests pass, including Needle Seal Readiness test.
- ACQUITY UPLC H-Class
- ACQUITY UPLC H-Class Bio
- ACQUITY UPLC H-Class PLUS
- ACQUITY UPLC H-Class PLUS Bio
Leak around needle and needle seat causing high %RSD.
FIX or WORKAROUND
- Replace needle, needle seat, and needle guide.
- Part numbers (Needle, 15uL SS w/Guide and Seat)
- H-Class Bio-700005421
- H-Class Plus-700011628
- H-Class Bio Plus-700011658
- Characterize the needle z axis.
- Characterize the needle seal.
- Perform the Needle Seal Readiness test.