AnsweredAssumed Answered

   the library search score for a compound is different with different instrument

Question asked by walleed on Oct 23, 2019
Latest reply on Nov 9, 2019 by garyb007

  .the library search score for a compound is different with different instruments

nowadays,in my work we have different types of gc-ms, we bought new gcms 7890B- 5977B HES , when comparing the result of the same sample (of course with  different dilution ) between gcms 7890B- 5977B HES and the gcms 7890B- 5977B inert source we found different ion ratio and this leads to different lib search score. the gcms 7890B- 5977B HES gives lower score with the same setting for method of acquiring and  processing .we still depend largely on the match score.

so i wounder if this is normal, and if not , how i overcome this issue

thanks alot 

 

 

Outcomes