GC baseline upward drift with Isothermal temperature.

Hi,

After we are doing a maintenance for Insert weldment, split/spitless (GC 6890), a problem appeared GC baseline upward drift with Isothermal temperature 45 °C only during inject the sample.

But when doing blank inject the base line does not rise.? What can cause this problem?

Parents
  • Hello  ,

    I’m sorry for the delayed reply to your message.  Do you still need assistance with this? If you do, please take into consideration the notes below. However, if the issue was resolved, could you please share what the resolution was? 

    What detector are you using, and have you done any maintenance on that as well? In terms of injection, what mode are you using (split or splitless, is it a pressure pulsed injection)?

Reply
  • Hello  ,

    I’m sorry for the delayed reply to your message.  Do you still need assistance with this? If you do, please take into consideration the notes below. However, if the issue was resolved, could you please share what the resolution was? 

    What detector are you using, and have you done any maintenance on that as well? In terms of injection, what mode are you using (split or splitless, is it a pressure pulsed injection)?

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