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How to Build a Custom SRI Instruments GC
How to Build a Custom SRI GC
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1. Pick a chassis.
What is your application? If you will be injecting by gas sampling valve, purge & trap,
thermal desorber, or any other injector types in addition to on-column, then choose our versatile
which can mount up to five different injectors simultaneously.
For dual oven applications
or two GCs in one, choose
the
chassis.
If you will be injecting by
syringe only, you can choose
the ultra-compact
For industrial rack systems,
choose our
rackmount chassis.
If you want to add detectors
to an existing GC, choose
the
.
For any model GC chassis except the 110, a single channel PeakSimple data system is standard equipment. If you'll
be ordering more than one detector on your GC, you will need a four or six channel data system. The one and four
channel data systems connect to your Windows
computer's serial port, and the six channel model connects to the USB port.
2. Choose your detectors.
Detector types are selected depending on the particular measurement application ,
the required detection limit, matrix interferences, and/or regulatory guidelines. Since all five of our chassis can mount up
to four detectors simultaneously (some can mount five or even six), you can perform a surprising variety of applications
with one instrument.
DETECTOR SELECTIVITY
SENSITIVITY
(approximate)
hydrogen and hydrocarbons
500ppm
universal
200-500ppm
hydrocarbons
1ppm
chlorinated and brominated molecules
10ppb
hydrocarbons, chlorinated and brominated molecules
10ppm
universal, except neon
10ppm
aromatics and molecules with double carbon bonds
10ppb
nitrogen and phosphorus
10ppm
nitrogen, phosphorus, chlorinated and brominated molecules
100ppb
nitro functional groups (TNT, etc.; explosives)
1ppb, 50ppb
electronegative compounds
10ppb
reducing gases (like hydrogen and CO)
10ppb
sulfur or phosphorus
200ppb and 10ppb