Chemistry Reference
In-Depth Information
facturer
column column
injection
point system
control
compute
Nordion Micromat
HRCG
412
No
Yes
Dual
simultaneous
detector
combinations
from the
following:
FID
ECD
FTD
Photoionisation
Hall E.C.
1 Split-
splitless
2 On-column
injector
Yes
Yes
Siemens SiChromat
1-4 (single
oven)
SiChromat
2-8 (dual
oven) for
multi-
dimensional
GC)
Yes
Yes
FID
ECD
FTD
FPD
TCD
Helium
detector
1 Liquid-
liquid packed
columns
2 Split-
splitless
3
Temperature
programmable
4 On-column
5 Liquid
injector valve
on-line
6 Gas
injection
valve
7 Rotary as
injection
valve
No
No
Source: Own files
for smooth circulation of air; the radiant heat from the sample injection port units and the
detector oven is completely isolated. These factors combine to provide demonstrably
uniform temperature distribution. (The temperature variance in a column coiled in a
diameter of 20cm is less than ±0.75K at a column temperature of 250°C).
When the column temperature is set to a near ambient temperature, external air is
brought into the oven via a computer-controlled flap, providing rigid temperature control
stability. (The lowest controllable column temperature is 24°C when the ambient
temperature is 18°C and the injection port temperature is 250°C The temperature
fluctuation is less than ±0.1K even when the column temperature is set at 50°C.)
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