Specifications

44 Hardware Installation
2 Installation
Familiarizing the Customer
Follow the “Customer Familiarization Checklist” on page 53.
Important points about the CI MSD to cover include:
 Cleanliness is the most important factor for success in CI, especially
negative mode. This includes air leaks, water, and residual PFDTD
calibrant.
 NCI reagent gas setup:
There are no negative reagent ions formed. To set up for NCI mode, tune in
PCI mode, then load NCI tune file to switch parameters, set gas flow to 40%;
adjust if necessary for specific analyte.
 NCI operation:
Reagent gas flow, source temperature, and emission current are the three
most important parameters for optimizing NCI.
 No PFDTD calibrant ions are formed in PCI with isobutane or ammonia.
Tune with methane, and copy parameters to new file: for example,
PCINH3.U.
 The gas purifier can not be used with ammonia.
 Must ballast foreline pump daily if running ammonia. Refer to the
maintenance chapter of the 5975 Series MSD Hardware Manual.
 For updated information, see the Agilent Technologies Web site at
http://www.agilent.com/chem.