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Thermal Desorption Sorbent Tubes

Used for the determination of sub-ppb VOC measurements in ambient air, and available as purged or unpurged.

SKC offers single and multiple-bed thermal desorption tubes that meet EPA and MDHS Method requirements for the determination of sub-ppb VOCs in ambient air. All SKC thermal desorption tubes are sealed with PTFE end caps and marked with a permanent serial number.

Thermal desorption tubes are available as purged and unpurged versions:

  • Thermally purged tubes are for immediate use in the field
  • Unpurged tubes as thermally purged by a laboratory as needed.

Glass transport tubes and Swagelock fittings are available as accessories.

Thermal Desorption Tubes

MethodSectionsSorbentEndsSeparatorsPack
Size		Part Number
ASTM D61961Anasorb GCB1SSSWWSEach226-356
ASTM D61961Anasorb GCB1 (unpurged)SSSWWSEach226-356-UP
ASTM D6196, MDHS 721Tenax TASSSWWSEach226-357
ASTM D6196, MDHS 721Tenax TA (unpurged)SSSWWSEach226-357-UP
ASTM D6196, MDHS 721Tenax TAGOSWWSEach226-360
ASTM D6196, MDHS 721Tenax TA (unpurged)GOSWWSEach226-360-UP
ASTM D6196, MDHS 721Chromosorb 106SSSWWSEach226-358
ASTM D6196, MDHS 721Chromosorb 106 (unpurged)SSSWWSEach226-358-UP
EPA TO-1, IP-1B1Tenax TASSSWWSEach226-340
EPA TO-1, IP-1B1Tenax TA (unpurged)SSSWWSEach226-340-UP
EPA TO-1, IP-1B1Tenax TAGOSWWSEach226-339
EPA TO-1, IP-1B1Tenax TA (unpurged)GOSWWSEach226-339-UP
EPA TO-21Carbosieve S-111SSSWWSEach226-341
EPA TO-21Carbosieve S-111 (unpurged)SSSWWSEach226-341-UP
EPA TO-172Anasorb GCB1/Carbosieve S-111SSSWWSEach226-349
EPA TO-172Anasorb GCB1/Carbosieve S-111 (unpurged)SSSWWSEach226-349-UP
EPA TO-172Anasorb GCB1/Carbosieve S-111GOWWWEach226-346
EPA TO-17 2Anasorb GCB1/Carbosieve S-111 (unpurged)GOWWWEach226-346-UP
EPA TO-17, NIOSH 25493Anasorb GCB2/Anasorb GCB1/Carbosieve S-111SSSWWWSEach226-350
EPA TO-17, NIOSH 2549 3Anasorb GCB2/Anasorb GCB1/Carbosieve S-111 (unpurged)SSSWWWSEach226-350-UP
EPA TO-17, NIOSH 25493Anasorb GCB2/Anasorb GCB1/Carbosieve S-111GOWWWWWEach226-347
EPA TO-17, NIOSH 25493Anasorb GCB2/Anasorb GCB1/Carbosieve S-111 (unpurged)GOWWWWWEach226-347-UP
EPA TO-172Tenax GR/Anasorb GCB1SSOSWSOEach226-348
EPA TO-172Tenax GR/Anasorb GCB1 (unpurged)SSOSWSOEach226-348-UP
EPA TO-172Tenax GR/Anasorb GCB1GOWWWEach226-345
EPA TO-172Tenax GR/Anasorb GCB1 (unpurged)GOWWWEach226-345-UP
EPA TO-171Carbopack XSSSWWSEach226-363
EPA TO-171Carbopack X (unpurged)SSSWWSEach226-363-UP
Filters

Table Notes:

* Methyl tin mercaptide, stannous-2-ethyl hexanoate, butyltin trichloride

Separators:

G:  Glass Fibre Filter
F:   Foam
Q:   Quartz Filter
T:   PTFE Ring

Screening Tubes

These are made for the Dynatherm desorber and used for NIOSH 2549/EPA IP-1B.

Anasorb® GCB1 – Graphitised Carbon Black for sampling aliphatic and aromatic hydrocarbons and is equivalent to Carbotrap® B (20/40) and Carbopack B (60/80). This sorbent has proven to be valuable for sampling compounds of intermediate to high volatility.

Anasorb® GCB2 – Graphitised Carbon Black for sampling less volatile compounds. This sorbent has a low surface area and is equivalent to Carbotrap® C (20/40) and Carbopack C (60/80), and is useful in collecting semi-volatile organic compounds (SVOCs).

Sorbent
(coating)		Size (mm)
ODxLength		SectionsSorbent
(mg)		EndsSeparatorsPack
Size		Part Number
GCB2
/GCB1
/Carbosieve S-111
(purged)		6 x 1153250
/150
/100		GOWWWWEach226-330
GCB2
/GCB1
/Carbosieve S-111
(unpurged)		6 x 1153250
/150
/100		GOWWWWEach226-330-UP

Tube Ends:

GS:  Glass Sealed
GO:  Glass Open
SS:   Stainless Steel Open

Separators:

W:  Glass Wool
G:  Glass Fibre Filter
F:   Foam
N:   Nylon Ring
Q:   Quartz Filter
R:   Glass Spacer
S:   Screen
T:   PTFE Ring

Accessories

DescriptionPack Size Part Number
Glass Transport Tubes for ¼ inch OD x 3½ inch L tubes5Thermal Desorption Sorbent Tubes226-300Thermal Desorption Sorbent Tubes
PTFE Ferrules, set of 2EachP30121Thermal Desorption Sorbent Tubes
Swagelok Fittings for ¼ inch OD x 3½ inch L tubes, set of 2EachP50291Thermal Desorption Sorbent Tubes