PerkinElmer Clarus SQ 8 MS Series Hardware Manual page 144

Clarus SQ 8 MS Hardware Guide
Problem Problem
Chromatographic peaks
too wide.
Discrimination of relative
peak intensities.
Peaks are flat-topped.
High baseline.
142
Probable Cause Probable Cause
Dirty injector liner.
Column has active sites.
Injector too cool.
Sample overloading the
column.
Incorrect GC oven program.
Poor resolution or improper
tuning.
Unstable filament.
Poor calibration.
Air leaks at detector.
Signal strength exceeds
dynamic range of detector.
Sample is too strong.
Dirty sample.
Air leak at injector.
Contaminated carrier gas.
Solution Solution
Clean or replace.
Equilibrate or replace.
Raise injector temperature.
Use a split injection or a smaller
sample.
Enter a new oven program.
Retune.
Replace filament.
Recalibrate.
Check He/Air ratio.
Reduce multiplier voltage.
Dilute or split.
Prepare and filter a new sample.
Locate and fix the air leak.
Replace the gas tank.