SIS Catalog Online

C15

AutoDesorb

™

Needles, Seals & Connecting Tubes

Scientific Instrument Services, Inc.

™

FAX: 908-806-6631

www.sisweb.com/catalog/08/C15

Needles for the AutoDesorb System

I

n the AutoDesorb

™

System, the needle serves as the

transfer line for the introduction of the sample into the Gas
Chromatograph. This “short path” for sample transmission

is the key advantage of the Short Path Thermal Desorption
technology which minimizes sample decomposition, eliminates
system contamination and provides for the maximum delivery of
samples to the GC.

This 2 piece needle has been specifically designed for the

AutoDesorb system. The new design will permit the sealing of the
needles and connecting tube to the desorption tube with just a
finger tight twist connection. Vespel

™

seals (sold separately) are

used to make the leak tight seal. Double seals are not needed as
in TD3 and TD4 systems. The needles are of the side port design
to eliminate coring of the GC septa and are 35 mm long. The nee-
dles are available in plain stainless steel and now also in Silco

™

coated steel to eliminate any metal surface in contact with your
samples.

These needles and seals can also be used in the Older models

of the Thermal Desorption system ( Models TD3 and TD-4) as well
as the most current version, TD5.

Seals for the AutoDesorb™ System

A single one-piece Vespel

™

seal is used to make the leak tight

seal between the desorption tube and the needle as well as the
desorption tube and the connecting tube. These seals permit the
finger tight sealing of the desorption tube to the system. Wrenches
and tools are not required. Seals can be used up to 450°C. The
double seals used in the TD5 are not used in the AutoDesorb
system

Connecting Tubes and ‘O’ Rings for the
AutoDesorb System

The AutoDesorb™ System is shipped with 12 Connecting

tubes, however the user may wish to obtain additional spare con-
necting tubes. These connecting tubes are designed exclusively
for the AutoDesorb system and require both an ‘O’ Ring (purchased
separately below) and a Vespel Seal (purchased separately as
listed above).

Built into each connecting tube is a trap filter. This filter is

packed with 40 milligrams of Carbotrap and is used as a final filter
to assure clean carrier gas is passed through you sample. The trap
filter can be cleaned by baking out in the tube conditioning oven

Connecting

Tube

Part #786009

O Ring

Part #V107 Part #V107--Click to order
Current Price: $0.54
(100 or more: 40% off; 1000 or more: 60% off)
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=39

Seal
with

Cartridge

Part# 786017 Part #786017--Click to order
Current Price: $23.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=80

Desorption

Tube

Vespel Seal

Part# 786018 Part #786018--Click to order
Current Price: $9.35
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=269

Desorption

Tube Needle

Part #786035 Part #786035--Click to order
Current Price: $31.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=23

Seal Removal

Tool

Part #786910

2 Piece Desorption Tube Needle and Cross Section

Showing placement of the needle

and seal.

Connecting Tube,

and Needle Assembly

Part No.

Description

786035 Part #786035--Click to order
Current Price: $31.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=23

AutoDesorb Needle, 35 mm

786135 Part #786135--Click to order
Current Price: $36.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=41

AutoDesorb Needle, 35 mm, Silco

Part No.

Description

786018 Part #786018--Click to order
Current Price: $9.35
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=269

Vespel Seal for AutoDesorb tubes

786017 Part #786017--Click to order
Current Price: $23.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=80

Vespel Seal with Cartridge

786910

Seal Removal Tool

Part No.

Description

786009

AutoDesorb Connecting Tube

V107 Part #V107--Click to order
Current Price: $0.54
(100 or more: 40% off; 1000 or more: 60% off)
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=39

Viton™

™

O Ring for Connecting Tube

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