GC Column Oven Options
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Three temperature programmable column oven types are available for SRI GCs:
1) The large air bath column oven comes standard on the 8610C chassis. This oven will accommodate a single column on a 7-inch diameter cage, or multiple columns on smaller cages or bundled without cages. Rated to 400oC, this oven is equipped with a 600 watt heater and fast cool-down fans.
2) The small air bath column oven comes standard on the 310 and 410 chassis. This oven will fit multiple columns coiled 5 inches diameter or smaller (3.5" to 4" coil size work best). This oven is also rated to 400oC. Equipped with the same 600 watt heater and fast cool-down fans as the larger oven, this smaller volume oven heats and cools faster. Dual, independently programmable small air bath ovens are installed on the Model 8610D chassis. The second oven is 4.5" wide, so columns coiled smaller than 4" diameter must be used.
3) The Virtual Oven™ is optionally available on the 8610C, 8610D, and 310 GC chassis. Use part number 8690-1000 to request it in place of an air bath column oven. The Virtual Oven provides for the programmable heating and very rapid cooling of a 1/8" O.D. packed column up to 2 meters in length. Using low voltage AC to resistively heat the column, the column itself becomes the heater. The advantages of the Virtual Oven are:

a) Temperature ramp rates up to 99 degrees per minute are possible
b) Cool-down is very fast (250o to 50oC in one minute)
c) Temperature control very close to ambient (ambient +3oC)
d) Low power consumption
GC Column Oven Options
31