PAL3 System


SPDE features full automation for dynamic sample extraction, desorption and analysis using the CTC PAL. Most of our customers use SPDE for food and flavor research, forensic analysis or environmental applications. The typical lifetime of a single SPDE syringe is 1500 injections, though can be higher if a clean matrix is used.

SPDE for PAL Systems Description:
A gas-tight 2.5mL syringe is equipped with a special needle that is coated on the inside with an extraction phase. The phase can be applied in varying degrees of thickness.

The adsorption process is best described as follows: A liquid or headspace sample is drawn up into a 2.5mL syringe, thereby adsorbing analytes onto the stationary phase. A distribution balance is reached between the liquid sample matrix and the active phase.

The analytes are concentrated onto the phase by repeatedly moving the plunger up and down, thereby forcing the headspace or fluid through the needle. Fast plunger speeds ensure a quick exchange of sample near the active phase.

After adsorption, the syringe picks up carrier gas from the fiber bakeout station (if necessary, the station is also used to dry the coating and syringe). Then, the autosampler moves the syringe over to the hot GC inlet, and the analytes are desorbed. Additional gas flow from the syringe forces the analytes into the inlet, thereby ensuring sharp peak shapes. This technique can be used with splitless flow for maximum sensitivity.

CT-PAL3-SPDE-20 SPDE Option for PAL3, with Single Magnet Mixer
PAL3 SPDE-Opt00 SPDE Option for PAL3 without SMM
PAL3 SPDE-SP300 SP 300 for PAL3 SPDE conditioning station
PAL3 SPME-SP400     SP 400 for PAL3 SPME/SPME Arrow conditioning station
CT-Extr Cooler SMM Extraction Cooler for PAL-xt and PAL3, for SPDE applications
CT-PAL3Mix20 SMM Single Magnet Mixer for PAL3, for 20ml vials