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Flame Ionization Detector
When the performance of the FID has degraded you may want to replace the
flame tip ferrule, or clean the deposits from the internal parts, including the
flame tip.
Clean the
Flame Tip
and Internal
Parts
If the FID noise increases with frequent spikes, the internal parts may be
fouled and need to be cleaned.
To clean the flame tip and the internal parts of the FID, proceed as follows:
Note: Always handle detector components with tweezers to avoid
contamination.
WA R N IN G :
EYE HA ZA R D
WA R N IN G :
FIR E H A ZA R D
Use proper eye and skin protection.
Methanol and acetone are toxic and
flammable chemicals. Exercise appropriate
care when you use and dispose of these
substances.
1
Remove the detector and internal parts.
2
Scrape the deposits from the bore of the collector tube, the insulator,
and the metal part of the flame tip with emery cloth (e.g., SiO
2
).
3
If the flame tip is plugged, insert a wire through the flame tip orifice to
clear it.
4
If you have access to an ultrasonic cleaner, clean the collector,
insulator, and flame tip with distilled water.
5
Rinse the cleaned components with methanol or acetone and air dry.
6
Wipe the detector tower with acetone.
7
Clean the probe arms with methanol and air dry or dry in an air oven
(maximum drying temperature of 150°C).
8
Reinstall the detector. To prevent leaks, use a NEW aluminum seal
washer each time you install the detector tower.
