The EMS and EMC scans are two different scan types that can be run on a QTRAP® system, making use of the linear ion trap (LIT) functionality. The EMS or enhanced mass scan is a full mass range MS scan in the LIT. The EMC or enhanced multiple charge scan is carried out in the LIT, where high charge state ions are selectively trapped and scanned.
The current instrument data file (current.dat file) for Triple Quad™ or QTRAP® LC-MS/MS 7500 Systems is backed up to a SCIEX OS Software folder located at C:\ProgramData\SCIEX\MassSpec\InstrumentData\YYYYMMDDHHMMSS.
Yes, the SCIEX QTRAP® or TripleQuad™ 7500 LC-MS/MS Systems can operate without the E Lens™ Technology active. Each QTRAP and TripleQuad 7500 System comes with a blanking plug that can be inserted should there be a need to operate without the E Lens Technology.
The ion sources for the SCIEX QTRAP® and TripleQuad™ 6500+ and 7500 LC-MS/MS Systems are not interchangeable. The OptiFlow® Pro Ion Source cannot be used on the QTRAP or TripleQuad 6500+ Systems. Likewise, the IonDrive™ Turbo V, Turbo V™, and OptiFlow Ion Sources cannot be used with the QTRAP and TripleQuad 7500 Systems.
To set up a MRM transitions where the Q1 mass for one compound is identical to a second compound in Analyst® software, change the Q1 mass of the second compound by 0.1 -0.05 Da. After making this adjustment, the software will accept the duplicate mass for Q1.
This article explains how to resolve the issue of low sensitivity on a Triple Quadrupole or QTRAP instrument due to an incorrect CEM value by manually optimizing the CEM detector parameter in the Analyst software