INFICON Explorer Portable Gas Chromatograph - Manual (Page 212)

Calibration
210
Introduction
Gas chromatography is a comparative method; therefore, an unknown sample must
be compared to a known standard in order for the sample components to be
identified and quantified.
If Explorer will be used to analyze air samples then a pressurized supply of
commercially prepared and analyzed calibration gas must be obtained for use
with
Explorer. This calibration gas can be used to fill gas bags or it can be
connected directly to the Sample In port.
Explorer may also be used to analyze water samples. It is not designed to accept
liquid injections, so water samples are analyzed using the headspace above
samples. You should obtain commercially prepared standards. Contact
INFICON
Technical Support for more information on preparing aqueous standards.
CAUTION
Do not inject liquid samples into Explorer. You will damage
the instrument
You must calibrate using the same technique as your sample. If you are using
automatic loop injection for sampling, calibrate using loop injection. If you are using
syringe injection for sampling, calibrate using syringe injection.
Explorer should be calibrated at the start of each day of operation, and after
each eight hours of operation. If the Method is changed, then calibration is
required. Calibration is also required after most maintenance is performed.
Explorer should be operated within the temperature range of 5 °C to 40 °C (40
to 105 °F). If the instrument is exposed to a large temperature change, such as
that encountered when going outside from an air conditioned lab in the summer,
then allow
Explorer to warm up for 20 to 30 minutes after being turned on.