SRI DETECTORS

		Tel............................203.393.3112
QUADREX CORPORATION		Toll-Free................... 800.275.7033
P.O. Box 3881		Fax.......................... 203.393.0391
Woodbridge, CT 06525 U.S.A.		E-Mail..........sales@quadrexcorp.com

SRI GC DETECTORS - TID - THERMIONIC IONIZATION DETECTOR

SRI TID DETECTOR

	Highly selective to nitro-functional groups
	Responds to chlorinated phenols
	Detects to 1ppb
	Convenient bead design
	Can run on air in the field
The Thermionic Ionization Detector (TID) is similar in design to the FID and NPD detectors. The TID is extremely selective, having little or no response to most aromatic and aliphatic hydrocarbons. At slightly less sensitivity, the TID also responds to chlorinated phenols such as pentachlorophenol (PCP).
An electrically heated thermionic bead (TID bead) is positioned so that the column effluent contacts the hot bead surface. Upon contact, analyte molecules containing nitro-functional groups such as TNT undergo a catalytic surface chemistry reaction. The ions created in this reaction are attracted to the collector electrode, amplified and output to the data system.

The TID requires air for optimum sensitivity. If air is used as the carrier gas, no other detector gases are required. An air makeup gas is provided so that nitrogen or another gas can be used as a carrier. The TID can operate in a nitrogen-only environment with similar but not identical response characteristics. No detector gases other than air or nitrogen are required. A make-up gas is provided so nitrogen can be used as a carrier while air or another gas can be added at the end of the column.

#SRI-8690-0017, TID DETECTOR

$3,089.00

Hot Tip

up to SIX DETECTORS Can be mounted on the 8610c gc mainframe.