Short Path Thermal Desorption Tubes

Tech Tip: 3.0 mm desorption tubes are easier to seal than 4.0 mm tubes.

The Glass Lined Stainless Steel Desorption Tubes are available in two inside diameters, i.e. 3 mm and 4 mm. Each tube is 4.0 inch long by 1/4 inch outside diameter and is threaded on both ends. After conditioning and sample loading, the ends of the tubes are fitted with stainless steel caps with seals to maintain the integrity of the medium and sample. PTFE and Viton® seals can be used in the caps to make the seal. These same threads on the Desorption Tube also provide the means of connecting the Desorption Tubes to the desorption connector tube and the injecting syringe needle utilizing one of the 4 types of seals.

Empty GLT Desorption Tubes and Accessories

Tubes should be baked out prior to use.

Part No.	Description	UOM	est wt.	Quantity In Stock	Price	Quantity to order
786005		---		0(#)	CALL
786088	GLT Desorption Tube, empty, 3.0 mm I.D., silylated	EA	0.25	0(#)	---	---
786002	Silco Coated SS Desorption Tube, empty, 4.0 mm I.D., serialized	EA	0.25	40	$38.00
786003		---		0(#)	CALL
781006		---		0(#)	CALL
781007		---		0(#)	CALL
781122		---		0(#)	CALL
(#) Standard lead-time for out-of-stock items is approximately two weeks.
Ordering information. International (non-US) prices available through your local dealer.

Part No.	OD (in)	ID (in)	Thickness (in)	Cap Seal	Top Seal	Needle Seal	Acc Seals	pkg of	UOM	est wt.	Quantity In Stock	Price / Pkg.	Quantity (pkg) to order
781004	PTFE Washers
	0.21	0.12	0.06	Yes	Yes	Yes	Yes	10	PK	0.25	31	$8.00
Ordering information. International (non-US) prices available through your local dealer.

Indicate # of packages GLT Desorption tubes are supplied empty, without caps or seals. Tubes should be baked out prior to use.

Silylated Empty GLT Desorption Tubes

GLT tubes are also available cleaned, silylated and washed. These tubes are supplied empty, unconditioned and without caps or seals. Order caps, seals and needles seperately.

UOM=EA
Part No.	Description	est wt.	Quantity In Stock	Price	Quantity to order
786088	GLT Desorption Tube, empty, 3.0 mm I.D., silylated	0.25	0(#)	---	---
786002	Silco Coated SS Desorption Tube, empty, 4.0 mm I.D., serialized	0.25	40	$38.00
(#) Standard lead-time for out-of-stock items is approximately two weeks.
Ordering information. International (non-US) prices available through your local dealer.

*GLT Desorption Tubes are supplied empty, without caps or seals. Order caps and seals separately above.

Prepacked, Silylated and Conditioned GLT Desorption Tubes

GLT Tubes can be supplied ready for the collection of samples for subsequent analysis. Tubes are first cleaned, silylated, solvent rinsed and air dried. The tubes are then packed with the indicated packing between two quartz wool plugs. The packed tubes are then conditioned by ramping the temperature to 320 degrees C and holding at this temperature for 4 hours under constant carrier gas flow. The tubes are then cooled, capped and sealed to maintain their state.  These tubes are supplied complete with SS caps with PTFE seals.

Contact SIS or your local dealer for pricing.

Tenax® TA is 80/100 mesh - Tenax GR is 80/100 mesh - Carbotrap is 60/80 mesh - Carbosieve SIII is 60/80 mesh - Carboxen 569 is 20/45 mesh

Carbotrap, Carbosieve SIII and Carboxen 569 are products manufacturered by Supelco. Inc.

For specifications on the adsorbent resins see the section entitled Adsorbent Resins

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ADDRESS: Scientific Instrument Services, 1027 Old York Rd., Ringoes, NJ 08551-1054.