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28686-U Supelco

FLM Carbopack X Deactivated Stainless Steel TD Tube

preconditioned, pkg of 10 tubes, O.D. × L 1/4  in. (6.35 mm) × 3 1/2  in. (89 mm)

Synonym: Carbopack X

  •  NACRES NB.24



Related Categories Air Monitoring, Analytical/Chromatography, Fenceline Monitoring for Benzene - US EPA Method 325B, Passive/Diffusive Sampling, Sample Preparation & Purification More...
material   316 stainless steel TD tube (Deactivated w/Supelcoat TD)
description   Barcode Label w/unique number
  Sealed w/brass endcaps
feature   preconditioned
packaging   pkg of 10 tubes
O.D. × L   1/4  in. (6.35 mm) × 3 1/2  in. (89 mm)
matrix   Carbopack X
Agency/Method   EPA (for fenceline monitoring around the perimeter of oil & gas refineries)
  verified by EPA Draft Method 325B
Featured Industry   Environmental
Industrial Hygiene
compatibility   for analyte group BTEX - Benzene, Toluene, Ethylbenzene, and Xylene; 1,3-butadiene, isoprene and other VOCs
  for analyte group C3-C5
  for sampling Passively with Diffusive endcaps
  for use with PerkinElmer®, Markes, DANI, Shimadzu, and O-I Analytical Thermal Desorbers
  mode of use adsorbent


General description

Compliance with US EPA Method 325B
The new US federal regulation 40 CFR Parts 60 and 63 - Petroleum Refinery Sector Risk and Technology Review and New Source Performance Standards, is an update to the previous version which requires that the perimeter or fenceline of refineries are monitored for 14-day periods using passive sampling sorbent tubes at multiple locations for benzene and other volatile organic compounds (VOCs).

Carbopack X delivers trusted sampling performance from the inside while the easy to read tube markings and barcode delivers confidence and traceability on the outside.

FLM=FenceLine Monitor

Features and Benefits:
• Only sampling device available with Carbopack X adsorbent
• Only sampling device with sampling rates for Carbopack X validated by the US EPA
• Durable barcode to ensure traceability and minimize litigation risk
• Easy to read tube markings
• Certificate of Analysis included in every box
• Low-cost monitoring solution, tubes are reusable up to 100x

Legal Information

Carbopack is a trademark of Sigma-Aldrich Co. LLC

FLM is a trademark of Sigma-Aldrich Co. LLC

PerkinElmer is a registered trademark of PerkinElmer Inc.

Shimadzu is a trademark of Shimadzu Corporation

Safety & Documentation

Safety Information

NONH for all modes of transport


Certificate of Analysis


Milli-Q® Water Purification Solutions
Protocols & Articles


Passive Air Sampling Tubes for US EPA Method 325

Supelco's FLM™ Carbopack™ X Thermal Desorption Tubes are designed for the new US EPA Method 325. This new method is specific for monitoring the air concentration of volatile organic compounds emitted...
Jamie Brown
Reporter US Volume 33.4
Keywords: Air Monitoring, Air sampling, Chromatography, Diffusion, Diffusive sampling, Gas chromatography, Oxidations, Passive sampling, Sample preparations

US EPA Method 325B Compliance

The Analysis Workflow of the New EPA Method 325 for Fenceline Monitoring 
Keywords: Gas chromatography, Passive sampling, Sample preparations

Related Content

Carbopack™ X TD Tube for Fenceline Monitoring (EPA Method 325B)

The US EPA first employed Supelco's adsorbent technology beginning in 1981 with the development of the first thermal desorption tubes as an alternative to sampling volatile organic compounds with bul...
Keywords: Active sampling, Diffusive sampling, Environmental, Gas chromatography, Mass spectrometry, Passive sampling, Sample preparations

Peer-Reviewed Papers


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28017-U Diffusion Caps, Standard

replacement part

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25097-U TDS3 Storage Container, for use with PerkinElmer ATD-50, ATD-400, Turbomatrix, for use with Markes International Unity Alternative to brass endcaps for sealing thermal desorption tubes
23094-U 1/4 in. Brass Swagelok® and PTFE Ferrule End-Fitting Assembly, Precleaned for Thermal Desorption Tube, for use with 1/4 in. (6.35 mm) Thermal Desorption Tube, pk of 20 ea

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