CID Gas (Triple Quad only)
Argon is recommended for use as a collision gas for Collision Induced Dissociation (CID)
MS/MS in the triple quadrupole MS, with typical flow rates of 1 mL/min. The argon must have a
purity of greater than 99% and be regulated to 5 psi.
GC Carrier Gases
Helium
Helium is required as a carrier gas for the GC, with a minimum of 99.999% ultra-high purity, and
less than 1.0 ppm each of water, oxygen, and total hydrocarbons. The minimum requirement is
one 257 ft
3
tank with an Alltech regulator #AL8111, or equivalent tank and regulator. The output
gas pressure should be regulated to 80 psi.
The presence of greater than 1 ppm oxygen or water in the carrier gas supply may
significantly affect the performance of the 1200 GC/MS. It may also damage such
components as the capillary column, filaments, and multiplier. Varian recommends that
you verify that your gas suppliers use controlled tanks to ensure that purity standards
are maintained. If you purchase pure gases in contaminated tanks, you may end up with
a contaminated system requiring costly and time-consuming repair.
Filter
Use of a carrier gas filter is required for optimum performance and to protect your system from
potential contamination. Your GC Accessory Kit includes a GC/MS Gas Clean Oxygen/Moisture
filter (CP-17973) and filter base. This easy-to-remove gas filter cartridge combines three highly
adsorptive materials in one filter to remove water, oxygen, and organic compounds to purify the
GC/MS gas. Carrier gas filters should be installed in a location where the indicator is visible.
The filter should be replaced when the indicator shows that the filter is saturated, or after one
year of service. For replacement procedures, refer to the instructions enclosed with your filter.
1200L GC/MS
Entrance
Before arranging for delivery of the 1200L GC/MS to your facility, please make sure that all
passages to the site of installation are at least 36 in. (110 cm) wide. Allow additional room for
maneuvering the shipping containers around corners and/or through doors.
CAUTION
The 1200 MS, foreline pump, and gas chromatograph are
heavy items that require at least two fit people for lifting
and moving safely.
Space and Load Requirements
The required layout for the 1200L MS with the gas chromatograph is illustrated in Figure 2. The
gas chromatograph must be positioned to the left of the instrument to allow connection of the
transfer line from the GC to the MS.
NOTE: This figure illustrates North American power requirements (115 Vac). See Table 2 for
230 Vac amperage requirements.
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1200/1200L MS Pre-installation Instructions
