Item #:
TMS/2714V52
Supplier #: 2714V52
Agilent Technologies Part No. 6040-0809
It is not necessary to change the diffusion pump fluid more than once a year, unless you observe symptoms that suggest a problem with the diffusion pump fluid. The MSD must be vented in order to check the diffusion pump fluid (except for the 5973). Therefore, the best time to check the fluid is when the instrument is already vented for other maintenance.