HPLC chromatogram has a lower peak area value than before - WKB86274
Article number: 86274
SYMPTOMS
- Measurement was performed using 2695/2489/2475. Only the chromatogram from 2489 had a smaller peak area value than before (the peak area value from 2475 was the same as before)
- The peak area value from 2489 is about 1/3-1/4 of the previous
- Two components are measured, both areas are low at a same level
- Retention time and peak shape are the same as before
- 2489 lamp hours is 1000 hours
ENVIRONMENT
- 2487 Dual-Wavelength Absorbance Detector
- 2489 UV/Vis Detector
- 2475 Multi-Wavelength Fluorescence Detector
- 2695 Alliance Separations Module
CAUSE
- Poor sensitivity
- Dirty system
FIX or WORKAROUND
- Perform the system cleaning
- Perform the manual calibration
- After equilibration with the initial composition of the measurement conditions, restart the detector
ADDITIONAL INFORMATION
Routine Cleaning for the Alliance System
id86274, 2475, 2475B, 2487, 2489, 2489B, 2489SFC, 2690, 2690D, 2690DUPGD, 2690UP, 2695, 2695D, 2695DE, 2695DEB, 2695DUP, 2695E, 2695EB, 2695INERT, 2695UP, A-10FL, A-10SSM, A-10UV, ALLCOLCLR, ALLCOLHTR, ALLCOLHTRB