Poor injection reproducibility with Alliance 2695 - WKB10442
Article number: 10442
SYMPTOMS
- System is not delivering reproducible injections
- Inconsistent area counts between injections from the same vial
- Poor system precision
- Poor peak shape, tailing, etc.
ENVIRONMENT
- Alliance HPLC system
- 2695 Separations Module
CAUSE
Air is leaving the system through the purge waste line, attributable to the seal pack being out of adjustment/alignment.
FIX or WORKAROUND
- Perform a wet prime.
- Verify that no air bubbles are leaving the system through the purge waste line.
- Perform "Adjust Seals" from front panel of the 2690/2695.
- Note any change from "Previous" to "Current" values.
- Verify that the values are within the recommended Waters range (see Additional Information section below).
- Accept the values.
ADDITIONAL INFORMATION
id10442, 2690, 2690D, 2690DUPGD, 2690UP, 2695, 2695D, 2695DE, 2695DEB, 2695DUP, 2695E, 2695EB, 2695INERT, 2695UP, A-10SSM, ALLCOLCLR, ALLCOLHTR, ALLCOLHTRB