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Agilent Technologies 7890A Troubleshooting Manual page 27

Gas chromatograph

Hide thumbs Also See for 7890A:

Peak Areas Not Repeatable

Troubleshooting

Check the ALS syringe operation. (See the Troubleshooting

section of the 7683B Automatic Liquid Sampler Installation,

Operation and Maintenance manual and 7693A Automatic

Liquid Sampler Installation, Operation and Maintenance.)

• Replace the syringe.

• Check for leaks in the inlet, liner (as applicable), and

column connection. (See "Checking for Leaks".)

• Check sample level in vials.

• Run replicates of known standards to verify the problem.

• Consider if this is the first run. (Has the GC stabilized?)

Chromatographic Symptoms