Which brand of GC-MS is easy to use?

Agilent's 7890-5977, of course, followed by thermoelectric ISQ. Shimadzu does not recommend it, because it is not much cheaper and not as easy to use as Agilent.

Agilent's GCMS method is widely used, with good user interface affinity, high market share and strong service engineer experience and technical level.

Thermoelectric GCMS is actually very easy to use, and Tracefinder software is very easy to use, which is very suitable for large-scale testing laboratories. The price is slightly cheaper than Agilent. In recent years, it has gradually eroded Agilent's market, and its service level has gradually caught up with Agilent, but the level of engineers is uneven. The engineers we met are even novices, and their familiarity with instruments is not as good as that of analytical engineers in our laboratory.