The Column Oven
Making a temperature-programmed run
90
Oven ramp rates
To use the fast oven ramp rates (a 240 V power option is required), your electric
service must be able to supply ≥ 200V at ≥ 15 Amp.
The highest rate that you can achieve depends on many factors, including the
room temperature, temperatures of the inlets and detectors, the amount of
material inside the oven (columns, valves, etc.), and whether or not this is the
first run of the day. The optional oven insert for fast chromatography (see
page 94), increases oven ramp rates for the back column. Table 10 lists typical
oven ramp rates.
Table 10 Oven Ramp Rates
100/120 V oven
ramp rate (°C/minute)
200/220/230/240 V oven
ramp rate (°C/minute)
Temperature
range (°C)
Without
insert
With optional
insert
Without
insert
With optional
insert
50 to 70 75 120 120 120
70 to 115 45 95 95 120
115 to 175 40 65 65 110
175 to 300 30 45 45 80
300 to 450 20 35 35 65
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