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Thermal Desorption Unit Tubes
Thermal Desorption Unit (TDU) Tubes
• Variety of sorbents to collect a wide range of VOCs.
• Use corrosion-resistant glass tubes for excellent inertness; allow monitoring of
sorbent bed condition.
• Choose stainless steel tubes for greater durability in the field. No sampling pump
necessary for passive sampling with diffusion caps.
• Individually etched with unique serial number for convenient sample identification.
• Robust barcode—the most reliable “code 128” format—on tube for recording and
tracking.
• Each tube has an arrow indicating flow direction to reduce errors during use.
• Available unconditioned or preconditioned and ready to sample. Tubes are reusable
after thermal desorption for most applications.
High-quality thermal desorption tubes are suitable for ppt to ppm concentrations of
volatile organic compounds (VOCs) in ambient, indoor, personal, and industrial hy-
giene environments. Fit Markes (ULTRA and UNITY™), PerkinElmer, and Shimadzu
thermal desorbers. Packed tubes come with a report detailing the total mass of sorbent
in the tube; conditioned tubes also include a blank chromatogram.
Thermal Desorption Unit Tubes (Empty)
• Empty tubes for direct desorption of VOCs from liquids, solids, or pastes.
• Stainless steel: front sorbent-retaining gauze, rear gauze, and gauze retaining spring
supplied; or glass: glass frit positioned 15 mm from sampling end.
• Can be packed with any sorbent to suit any application.
Thermal Desorption Unit Tubes (Calibration)
Specifications
Dimensions: 1/4" OD x 3 1/2" long
Low sampling rates: 0.01–0.20 L/min (<10 L total volume)
Long-term storage caps are supplied with conditioned tubes
24061
24062
24067
24054
24055
method applications
Method Application
U.S. EPA TO-17
ASTM D6196
NIOSH 2549
DIN EN ISO 16017
Thermal Desorption Tube Sorbent Vapor Phase Organics Applications
Tenax TA C6/7 to C26
Graphitized Carbon C5/6 to C14
Tenax GR/Carbopack B n-C5/6 to n-C20 (EPA Methods TO-14A/TO-15/TO-17)
Carbopack B/Carbosieve SIII n-C2/3 to n-C12/14 (EPA Methods TO-14A/TO-15/TO-17)
Tenax TA/Graphitized Carbon/Carboxen 1000 C2/3 to C20
Carbopack C/Carbopack B/Carbosieve SIII n-C2/3 to n-C16/20 (EPA Methods TO-14A/TO-15/TO-17)
Tenax is a trademark of Buchem BV. Carbopack, Carbosieve, and Carboxen are trademarks of Sigma-Aldrich.
Thermal Desorption Unit Tubes (Unconditioned and Conditioned & Capped)
Stainless Steel Glass
Description qty. cat.# price cat.# price
TDU Tubes, Empty 10-pk. 24054 24055
Stainless Steel Glass
Description qty. cat.# price cat.# price
TDU Tubes, Calibration, Tenax TA 1 cm Bed (35/60 mesh) 10-pk. 24075 24076
Description qty. cat. price
Calibration Solution Loading Rig ea. 24077
Calibration Solution Loading Rig Replacement Septa, 9.5 mm 10-pk. 24078
Certified Reference Standard, 100 ng BTX on Tenax TA 10-pk. 24079
Unconditioned Conditioned & Capped
Stainless Steel Glass Stainless Steel Glass
Sorbent Description qty. cat.# price cat.# price cat.# price cat.# price
Tenax TA (35/60 mesh) 10-pk. 24056 24062 24080 24086
Graphitized Carbon (20/40 mesh) 10-pk. 24057 24063 24081 24087
Tenax GR (35/60 mesh)/
Carbopack B (60/80 mesh) 10-pk. 24058 24064 24082 24088
Carbopack B (60/80 mesh)/
Carbosieve SIII (60/80 mesh) 10-pk. 24059 24065 24083 24089
Tenax TA (35/60 mesh)/
Graphitized Carbon (40/60 mesh)/
Carboxen 1000 (60/80 mesh)
10-pk. 24060 24066 24084 24090
Carbopack C (60/80 mesh)/
Carbopack B (60/80 mesh)/
Carbosieve SIII (60/80 mesh)
10-pk. 24061 24067 24085 24091