What procedure is used to ensure that EI-MS are comparable between instruments?

Question

Quizplus · Accepted Answer

The most commonly used procedure to ensure that EI-MS are comparable between instruments is to adjust the instruments to set criteria using PFTBA tuning. PFTBA (perfluorotributylamine) is a compound that produces characteristic peaks in the mass spectrum, which can be used to adjust the mass spectrometer to a specific mass resolution and accuracy. This allows for the comparison of EI-MS data between different instruments. The other options (A, B, D, E) are not specific procedures for ensuring comparability between EI-MS data from different instruments.

What Procedure Is Used to Ensure That EI-MS Are Comparable