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Pages in this section: C22 C23 (all shown below)
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Thermal Desorption Sample Collection System
C22
Scientific Instrument Services, Inc.
™
Phone: 908-788-5550
www.sisweb.com/catalog/08/C22
T
his Sample Collection System permits the purging of
volatiles and semi-volatile components present in solid
materials and their trapping on Desorption Tubes packed
with an adsorbent resin for subsequent analysis by desorption
utilizing the Short Path
™
Thermal Desorption System. Volatiles can
be collected from sample sizes ranging from less than 0.5 gram up
to 20 grams.
This technique for collecting volatiles from samples for
analysis is used:
(1)
To permit the analysis of trace components in larger
sample sizes than could be analyzed by Direct Thermal
Desorption in the Short Path Thermal Desorption System. Soil
samples up to 20 grams can be sampled in the 0.5" diameter
tubes.
(2)
To permit the analysis of volatiles from organic samples
containing high concentrations of water. Water is not retained by
many adsorbents (such as Tenax™) whereas other organic
volatiles would be trapped by the adsorbents. Water interferes with
the GC analysis by forming plugs to block carrier gas flow thru the
GC columns when the GC oven is maintained at subambient
temperatures during the initial desorption of samples into the GC.
(3)
To permit the analysis of volatiles emitted from the
samples at different temperatures by collecting the volatiles onto
Desorption Tubes at increased temperatures. It is therefore
possible to set up studies to determine the temperatures of
emission of volatiles and semi-volatiles from materials such as
carpet fibers, packaging materials, building products, etc.
Samples to be analyzed are placed inside glass or stainless
steel tubes and held in place by glass wool plugs. The system is
designed to sample from 0.5" diameter glass tubes, and also from
0.25" diameter glass tubes with optional adapters. Sample tubes
are 14.0" long each. When ready for sample collecting, the long
tube containing the sample is placed in the sample Collection
Oven, fitted at one end with a supply of carrier gas to flush out the
residues, and fitted at the opposite end with a preconditioned
Desorption Tube with adsorbent resin. The
Oven is set for the desired temperature and the
desired components are collected onto the
Desorption Tubes. Oven temperatures can
range from room temperature up to 250° C.
The temperature used, as well as the time of
sampling, depends on the nature of the
samples being analyzed and the requirements
of the analyst. Soil samples are typically
analyzed at 80° C and sampled for 30 to 60
minutes.
The Sample Collection System consists of
a sample tube oven with ports for four 0.5"
diameter sample tubes. Up to four samples can
be collected simultaneously with the system.
Four rotameters regulate the gas flow thru
each of the samples independently of one
another. A Watlow precision Temperature
Controller provides accurate control of the
temperature of the Sample Collection Oven up
to 250° C. A digital readout indicates the actual
oven temperature. The actual Sample
Collection Oven consists of a large aluminum
plate with holes drilled for the sample tubes
and is heated by cartridge heaters. Heat
transfer to the sample tubes occurs via direct
thermal transfer from the aluminum block to the
sample
tubes.
Temperatures
can
be
maintained within 1% of the full scale reading.
On the front of the Sample Collection System four quick dis-
connect fittings connect to a 1/8” flexible transfer line to provide
gas flow thru each of the sample tubes and Desorption Tubes
during sampling. By providing gas flow from a carrier gas such as
Nitrogen or Helium thru the heated sample tubes and the
Desorption Tubes while sampling, the volatiles and semi-volatiles
will be purged from the sample and will be trapped by the adsor-
bent in the Desorption Tube. A single 1/8” fitting on the back of
the System is provided for the attachment of the gas from its
source.
Purge Gas Flow
S.S. Connector, 0.5" to Desoprtion Tube
with Purge Gas Inlet
(#782075)
S.S. Connector, 0.5" to 1/8" Swagelok
(#782071)
Sample for Analysis
Quartz Wool Plug
Carrier Gas Flow
Sample Heater
GLT Desorption Tube
with Tenax
Carrier Gas Flow
Sample Heater
GLT Desorption Tube
with Tenax
Sample Collection System for the collection
of thermally sparged volatile samples
GLT Desorption
Tube with Tenax
GLT Desorption
Tube with Tenax
Dry Purge Gas Flow
(optional)
Sample Heater Block
Sample Heater Block
Sample in Glass Tube
Carrier Gas Flow
782071
782072
782075
Carrier Gas Flow
782071
Note: The S.I.S. Sample Collection System can be Modified for other
Manufacturers Desorption Tubes
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C23
Thermal Desorption Sample Collection System
Scientific Instrument Services, Inc.
™
FAX: 908-806-6631
www.sisweb.com/catalog/08/C23
Thermal Desorption Sample Collecting Oven Accessories
S.S. Connector, 0.5" to Desoprtion Tube
with Purge Gas Inlet
(#782075 Part #782075--Click to order
Current Price: $165.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
)
S.S. Connector, 0.5" to Desorption Tube
(#782072 Part #782072--Click to order
Current Price: $90.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
)
0.5" Dia. Glass Sample Tube
(782061 Part #782061--Click to order
Current Price: $14.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=14
)
S.S. Connector, 0.5" to 1/8" Swagelok
(#782071 Part #782071--Click to order
Current Price: $36.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
)
S.S. Connector, 0.5" to 1/8" Swagelok
(#782071 Part #782071--Click to order
Current Price: $36.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
)
Sample for
Analysis
Quartz Wool
Plug
Fittings & Adapters for Sample Collecting Ovens
*Note- Custom size sample collecting ovens can be manufactured by S.I.S. on special request. Call or write with your requirements for a quotation.
782071 Part #782071--Click to order
Current Price: $36.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
782072 Part #782072--Click to order
Current Price: $90.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
782074 Part #782074--Click to order
Current Price: $61.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
782075 Part #782075--Click to order
Current Price: $165.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
782076 Part #782076--Click to order
Current Price: $170.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
782078 Part #782078--Click to order
Current Price: $235.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
782073 Part #782073--Click to order
Current Price: $24.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Sample Collection Oven System and Accessories
Part No.
Description
782050 Part #782050--Click to order
Current Price: $4125.00
Unit of Measure: EA
Est. Ship Weight=30 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Sample Collection Oven for 4 samples with 4 rotameters, 4 - 0.5" ports , 4 - 0.5" glass sample tubes,
with fittings, (4 - 782071 Part #782071--Click to order
Current Price: $36.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
, 2 - 782072 Part #782072--Click to order
Current Price: $90.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
, and 2 - 782075 Part #782075--Click to order
Current Price: $165.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
) 4 - Desorption Tube Caps with holes
782061 Part #782061--Click to order
Current Price: $14.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=14
Sample Tube, Glass, 0.5" O.D. x .36" I.D. x 14" long
782062 Part #782062--Click to order
Current Price: $14.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Sample Tube, Glass, 0.25" O.D. x .15" I.D. x 14" long
782063 Part #782063--Click to order
Current Price: $35.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Sample Tube, Stainless Steel, 0.5" O.D. x .36" I.D. x 14" long
782064 Part #782064--Click to order
Current Price: $35.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Sample Tube, Stainless Steel, 0.25" O.D. x .15" I.D. x 14" long
782065 Part #782065--Click to order
Current Price: $78.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=1
Reducing Adapter Vespel, 0.5" to 0.25" sample tube
782066 Part #782066--Click to order
Current Price: $24.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Reducing Adapter PTFE, 0.5" to 0.25" sample tube
782071 Part #782071--Click to order
Current Price: $36.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
S.S. Connector, 0.5" to 1/8" Swagelok
782072 Part #782072--Click to order
Current Price: $90.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
S.S. Connector, 0.5" Swagelok to Desorption Tube
782073 Part #782073--Click to order
Current Price: $24.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
S.S. Connector, 0.25" to 1/8" Swagelok
782074 Part #782074--Click to order
Current Price: $61.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
S.S. Connector, 0.25" Swagelok to Desorption Tube
782081 Part #782081--Click to order
Current Price: $8.40
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
0.5" PTFE Seal
782082 Part #782082--Click to order
Current Price: $7.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
0.25" PTFE Seal
782075 Part #782075--Click to order
Current Price: $165.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
S.S.Connector, 0.5" to Desorption Tube with 1/16" purge gas inlet
782076 Part #782076--Click to order
Current Price: $170.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
S.S.Connector, .25" to Desorption Tube with 1/16" purge gas inlet
781007 Part #781007--Click to order
Current Price: $9.45
Unit of Measure: EA
Est. Ship Weight=2 lbs
Quantity in Stock=349
S.S. Desorption Tube Cap with hole
782077 Part #782077--Click to order
Current Price: $235.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Injection Head with Septum for 1/4" tubes
782078 Part #782078--Click to order
Current Price: $235.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
Injection Head with Septum for 1/2" tubes
S.S Connector, 0.5" Swagelok™ to Desorption Tube
(#782072 Part #782072--Click to order
Current Price: $90.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
)
0.5" Dia. Glass Sample Tube (#782061 Part #782061--Click to order
Current Price: $14.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Quantity in Stock=14
)
Glass Wool Plug
Sample for Analysis
S.S. Connector, 0.5" to 1/8" Swagelok
(#782071 Part #782071--Click to order
Current Price: $36.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
)
S.S. Connector, 0.5" to 1/8" Swagelok
(#782071 Part #782071--Click to order
Current Price: $36.50
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
)
S.S Connector, 0.5" Swagelok to Desorption Tube
With Purge Gas Inlet (#782075 Part #782075--Click to order
Current Price: $165.00
Unit of Measure: EA
Est. Ship Weight=0.25 lbs
Not in stock. Standard lead time for out-of-stock items is approximately two weeks.
)
*Alternatively these fittings can be fitted with sep-
tum seals and be used for addition of internal
standards.
Related information may be found on the following pages of our web site:
PageParts
Short Path Thermal Desorption GLT Tubes781007
Thermal Desorption Conditioning Oven - 6 Tube781007
Purge and Trap Stainless Steel Purge Heads781007
SIS Purge and Trap System781007
Wheaton Purge and Trap System781007
24 Tube Conditioning Oven for Thermal Desorption Tubes - C14781007
Thermal Desorption Sample Collection System781007, 782050, 782061, 782062, 782063, 782064, 782065, 782066, 782071, 782072, 782073, 782074, 782075, 782076, 782077, 782078, 782081, 782082
Desorption Tube Fittings782072, 782074, 782075, 782076
Page Number: [ previous page next page ]
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