2000 MS Hardware Maintenance
70
Chemical Ionization Options
Handling and Storage of CI Liquids in Reservoir
Bulbs
Use the procedure
Filling/Refilling the Liquid CI Reservoir Bulb to fill the reservoir bulbs (03-920270-
00) with liquid. If you wish to replace a liquid reagent with a different liquid, you
may use a vial cap (03-949870-04) from the MCI Module Accessory Kit to cap
the reservoir and store it in the laboratory refrigerator in the Reservoir Stand (03-
930073-01) supplied with the Kit. It is a good practice to use a single CI liquid in
each channel of the MCI Module. Vapor from the liquid will be absorbed to some
extent in the O-rings sealing the vial, restrictors, and solenoids for each channel.
Cleaning Reservoir Bulbs
Withdraw the solvent from the reservoir with the 5 mL Luer syringe supplied in
the Accessory Kit (89-988956-00 and 03-930129-01). Rinse the vial with a 3 mL
aliquot of the same solvent. Withdraw the wash solvent with the syringe. Dispose
of the liquid samples properly. Dry the bulb in a hood or a laboratory oven.
Changing a Channel from Liquid to Gas Operation
To change a channel from liquid operation mode to gaseous, the lower restrictor
(03-930596-02) must be replaced by a lower flow rate restrictor (03-930596-01)
that was removed from the pneumatics manifold when the MCI module was
installed. In addition, the liquid reagent reservoir must be replaced with the gas
