C21
Heated Thermal Desorption Sampling Chambers
Scientific Instrument Services, Inc.
™
FAX: 908-806-6631
www.sisweb.com/catalog/08/C21
Features
•
NW Type Flange or Conflat Type Flange
•
Max Sample Size: 3" diam x 1.5" high
•
Other Chamber sizes available on request
•
Maximum Sample Temperature - 750°C
•
Requires 2 Temperature Controllers
•
Requires Separate Flow Controller
•
Accepts any 1/4" diameter desorption tube
•
Maximum purge flow - 1000 ml/min
T
he Heated Thermal Desorption Sampling Chambers are
used to purge volatile and semi volatile organics from
large solid matrix samples at elevated temperatures and
then trap these analytes on thermal desorption tubes. The samples
collected are then analyzed using the thermal desorption system in
conjunction with a GC and/or GC/MS. The chamber shown is 4"
diameter x 4" high and can analyze samples up to 3.0" diameter x
1.5" high. These systems are custom made on order and other
chamber sizes can be constructed according to your requirements.
Two models of the 4" Sample Chamber are available - Standard
and High Temperature. The Standard Model is constructed using
an NW type flange with a PTFE encapsulated sealing ring (max
temp 250° C) and a quick disconnect clamp. The High
Temperature Model is constructed using a standard Conflat flange
with a copper sealing ring (maximum temperature 450° C) and the
chamber is clamped using standard 1/4" diameter bolts.
The system shown contains two heaters and J type thermo-
couples. The system requires two temperature controllers (order
separately below). The interior plate heater is used to directly heat
the sample on top of this plate inside the sealed chamber. This
heater can be heated up to 400° C in the standard model and up to
750°C in the high temperature model. The external heater is used
to heat the sample chamber to prevent the condensation of
volatiles on the surface of its walls. This heater is also used to heat
the chamber to higher temperatures in order to bake it out. The
maximum temperature for heating the walls is dependent on the
material used to seal the two halves of the sample chamber
(Standard Model is 225° C and High Temperature Model is 450° C).
The systems shown contain an adjustable internal purge gas
nozzle that can be positioned or replaced with another style to suit
the users needs. The purge gas can be adjusted from 0 to 1000
ml/min using a separate gas flow controller (not included).
The system is designed to accept any 1/4" diameter thermal
desorption tube including 1/4" glass tubes as well as the SIS GLT
thermal desorption tubes. The desorption tube is attached to the top
of the chamber using the 1/4" Swagelok fitting with either PTFE or
Graphitized Vespel seals.
Note: The Sampling Chamber can be
Modified for Other Types of
Desorption Tubes.
...for sampling of volatile and semivolatile organics from large samples at
elevated temperatures
All Sampling Chambers are custom designed and
manufactured for your application.
Call with your requirements for
pricing and availability.
(908) 788-5550
Part No.
Description
SC400
Part #SC400--Click to order
Current Price: $4500.00
Unit of Measure:
EA
Est. Ship Weight=20 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Standard 4" TD Sampling Chamber
SC450
Part #SC450--Click to order
Current Price: $5100.00
Unit of Measure:
EA
Est. Ship Weight=20 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
High Temperat. 4" Sampling Chamber
912000
Part #912000--Click to order
Current Price: $875.00
Unit of Measure:
EA
Est. Ship Weight=10 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
*
Temperature Controller, Model CT101
* Two temperature controllers required; one for the plate heater and a second
for the chamber housing.
Desorption Tube Packed
with Adsorbent Resin
1/4"Swagelok Fitting
Chamber Housing
Heating Blanket
with Thermocouple
Electrical Leads
Heater & TC
Electrical Leads
Heater & TC
Purge Gas
Inlet 1/8"
Swagelok
Purge Gas
Inlet Nozzle
Plate Heater & TC
3" dia. Sample Plate
Sealing Bolts
Copper
Gasket
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