5973 Autotune

We have been observing split peaks in our 5973 autotunes. The splitting is not consistent as it moves among the main masses (69, 219 and 502). We have cleaned and replaced just about everything to no avail. Has anyone observed the same phenomenon? How was it resolved? Thanks.

 

Bill

Parents
  • Hi,

    It is nothing wrong with the instrument. The little split peak doesnt effect your analysis. When the instrument is converting the profile spectra to centroid, the split is ignored. Only if you have very severe split peak (down at 70-60% of the height of the peak) will be the sign of a real problem on your quadrupole or electronic.

    The small splitting on the peak of the ion is due to the value of the repeller (at a high value or his maximum). That indicate a dirty repeller or the ceramics of the repeller polluted by your matrix over the time.

    clean the repeller and change the ceramics will lower the repeller value and the splitting will disappear.

    But in your case the ions seems to be ok. it is not, by far, a dramatic splitting that will affect your analysis.

    I hope that this answer will help.

Reply
  • Hi,

    It is nothing wrong with the instrument. The little split peak doesnt effect your analysis. When the instrument is converting the profile spectra to centroid, the split is ignored. Only if you have very severe split peak (down at 70-60% of the height of the peak) will be the sign of a real problem on your quadrupole or electronic.

    The small splitting on the peak of the ion is due to the value of the repeller (at a high value or his maximum). That indicate a dirty repeller or the ceramics of the repeller polluted by your matrix over the time.

    clean the repeller and change the ceramics will lower the repeller value and the splitting will disappear.

    But in your case the ions seems to be ok. it is not, by far, a dramatic splitting that will affect your analysis.

    I hope that this answer will help.

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