3 Intuvo 9000 GC Column Maintenance
52 5975/5977 Series MSD Operating Manual
Columns
Many types of Intuvo 9000 GC columns can be used with the MS, but there are
some restrictions.
During tuning or data acquisition, the rate of column flow into the MS should not
exceed the maximum recommended flow. Therefore, there are limits to column
length and flow. Exceeding recommended flow will result in degradation of mass
spectral and sensitivity performance.
Remember that column flows vary greatly with temperature, requiring
measurements of the actual flow to be taken. Use Table 6 to determine an
acceptable column flow.
Table 6 Gas flows
Feature Gas flows
High-vacuum pump Turbo
Optimal He column gas flow, mL/min (carrier gas) 1 to 2
Maximum recommended gas flow, mL/min
*
* Total gas flow into the MS = column flow
4 to 6
Maximum gas flow, mL/min
†
† Expect degradation of spectral performance and sensitivity
6.5
Maximum column id 0.53 mm (30 m length)
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