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Thermal Desorption Sample Loader

Thermal Desorption Sample Loader
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Description

For loading internal standards or liquid samples onto Silco Coated Desorption Tubes


Desorption Tube Injection Head for S.I.S. Thermal Desorption Tubes

This Desorption Tube Injection Head works much like the injection port on a Gas Chromatograph. This device is used to inject or load liquid samples directly into the S.I.S. Thermal Desorption Tubes, forcing the syringe contents onto the adsorbent resins in the desorption tube without any loss of sample due to back evaporation. This technique can be used to quantitatively inject the standards onto the adsorbent trap without any sample loss. In addition the solvents used for injection can be purged from the adsorbent resins by continued purging with the carrier gas. Constructed of stainless steel, the entire purge head can be baked out in an oven to thoroughly clean and remove contaminants.

The Desorption Tube Injection Head consists of a septum nut with septum for the introduction of the syringe needle and sample. A purge gas (carrier gas) flushes around the syringe needle purging any sample thereon to be carried onto the desorption tube resins. The S.I.S. desorption tube screws into the Desorption Tube Injection Head and a seal is made via the standard 1/4" PTFE Seal. The purge gas fitting consists of a standard 1/16" Swagelok fitting. The Desorption Tube Injection Head Body is 0.5" in diameter and is designed to clamp into the same ring clamp used for the S.I.S. Sample Purge Head and can be mounted on the Sample Purge System ringstand or other suitable stand.

sample loader theory

Injecting samples and internal standards onto adsorbent resins using the Direct Injection Adaptor assures that all of the sample is delivered to the adsorbent resin bed.


Indicate # of packages.

Part No. OD (in)ID (in)Thickness (in)Cap SealTop SealNeedle SealAcc Sealspkg of Stock/
Lead Time
UOM Price Order
783092 Direct Injection Adaptor for Liquid Sample Loading, does not include desorption tube
------------------------ 0*Standard lead-time for non-stock items is approximately two weeks depending on the item. EA$235.00
Qty
041844 SGE Septa, 9 mm dia. for Direct Injection Adaptor, pkg of 50
------------------------ 0*Standard lead-time for non-stock items is approximately two weeks depending on the item. PKCALL
Qty
781004 PTFE Washers
0.210.120.06YesYesYesYes10 84PK$9.75
Qty
789019 PEEK (R) connector tubing for purge gas line, 1/16in O.D. per foot
------------------------ 48 hoursLead time for this non-stock item is approximately 48 hours. Foot$8.50
Qty
783020 Clamp, ring stand type for Direct Injection Adaptor
------------------------ 25EA$51.50
Qty
Peek is a registered trademark of Upchurch Scientific.
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