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Air Sampling & Gas Sampling

Air Sampling & Gas Sampling

Air Canisters for VOC Monitoring

  • Variety of options available, including Summa can equivalent.
  • Exclusive manufacturer of 1L spherical canister.
  • Repair service available to extend canister life.

Sample Cylinders

  • Swagelok® sample cylinders are made of 304L and 316L stainless steel to resist corrosion.
  • DOT rated to 1,800 and 5,000psig (TPED cylinders rated to 1,450 and 4,350psig), which allows sampling at gas wellheads as well as on-site refineries.
  • Each cylinder is hydrostatically tested to at least 5/3 the working pressure.
  • Sample Cylinder Valves are also available.

Miniature Air Sampling Kits (Stainless Steel & Siltek® Treated)

  • Provide accurate integrated sampling without a sampling pump.
  • Convenient smaller size connects easily to miniature canisters.
  • Available in stainless steel or with Siltek® treatment for greater inertness.

Quick-Connect Fittings

for Miniature Air Sampling Canisters

Attach quick-connect body fitting to stem fitting to open canister. Attach quick-connect stem protector to stem fitting when not sampling to prevent canister from accidentally opening.

Connection: 1/4" tube fitting.

Mini-Can Accessories

These accessories enhance mini-can usage and provide flexibility in their application, from personal, to area, to vapor intrusion sampling.

Ultra-Clean Resin

Equivalent to XAD-2 Resin—Exclusively from Restek!

Ultra-Clean resin typically eliminates the hassle of cleaning and testing resin for air sampling.

  • For adsorbing semivolatiles in air.
  • Cleaned and GC tested.
  • Available in 100 gram quantities.

SDVB Resin

  • Styrene/divinylbenzene, equivalent to XAD-2 resin.
  • Untreated, packaged in 1 kg plastic containers.
  • Spherical, 20 to 60 mesh particles.

Technical Articles

Air Sampling

Storage Stability of 66 Volatile Organic Compounds (VOCs) in Silicon-Lined Air Canisters for 30 Days

The recoveries of 66 volatile organic compounds (VOCs) typically analyzed as part of the EPA Method TO-15 were evaluated for two commercially available silicon-lined (SL) air canisters. For the majority of the 66 VOCs, there were no appreciable differences in recoveries and stabilities between the canisters for both dry and humid conditions over 30 days of storage. Acrolein, dibromochloromethane, and bromoform were the only three compounds which appear to be unstable in both SL canister types; however, only under the humid (93% RH) condition.

Air Sampling

Whole Air Canister Sampling and Preconcentration GC-MS Analysis for pptv Levels of Trimethylsilanol in Semiconductor Cleanroom Air

Issues with trimethylsilanol scanner haze and optics haze have created a need for trace-level methods in the semiconductor industry. The whole air canister-based GC-MS method developed here couples pptv level sensitivity with near instant grab samples, allowing for the rapid screening of cleanrooms.

Environmental

Rapid Determination of TO-15 Volatile Organic Compounds (VOCs) in Air

The efficacy of using a Nutech preconcentrator and a 30 m analytical column for VOC analysis of air samples according to Method TO-15 was evaluated. Results demonstrate that method criteria were easily met and in much faster analysis times than typical methods based on 60 m columns.

Air Sampling

New Market Opportunities for VOC Air Sampling Labs

VOC testing laboratories can expand into new markets using existing air sampling canisters and thermal desorption tubes, due to the broad applicability of these techniques.

Air Sampling

Sampling Volatile Organic Compounds in Air - Restek Sampling Equipment Helps Assure Accurate Data

TO-Can™ air sampling canisters are electropolished and extensively cleaned, to provide a high-quality, passivated surface for improved stability of analytes listed in USEPA Method TO-15 (ambient air monitoring). For reactive compounds, such as sulfur-containing components, SilcoCan™ canisters are your best choice — our exclusive Siltek® surface treatment ensures exceptional inertness and maximum sample stability, even for 1-20ppb sulfur compounds.

Environmental

Enhancing Air Monitoring Methods with Thermal Desorption

The use of carbon disulfide (CS2) extraction as an air monitoring method for vapor-phase organic compounds (VOCs) is fundamentally limited with respect to detection limits. Thermal desorption (TD) is a complementary gas extraction technique whereby sorbent tubes are heated in a flow of carrier gas. Trapped vapors desorb from the sample tubes into the gas stream and are transferred into the GC/MS analyzer. Here, we summarize the key advantages of thermal desorption versus solvent extraction.

Petroleum & Petrochemical

Stable Sulfur & Mercury Sampling in Refineries - Using Siltek® and Sulfinert® Surface Treated Components

Refinery and natural gas samples often contain trace amounts of sulfur- and mercury-containing compounds, which can interfere with reactions, poison catalysts in petrochemical processes, and damage equipment. Because these compounds quickly react with stainless steel surfaces, accurate determination of these compounds is impossible when samples are collected and stored in untreated sample cylinders. Restek's Siltek® and Sulfinert® passivation techniques bond an inert layer into the surface of stainless steel, preventing active compounds from reacting with or adsorbing to the steel.

Air Sampling

Early Detection of Structural Mold with SilcoCan™ Air Sampling Canisters

Early detection of structural mold is critically important to protecting human health and property values. Restek SilcoCan™ canisters allow low levels of microbial volatile organic compounds (MVOCs) to be detected in air samples before mold can be seen, providing an opportunity for structural repair and safer living conditions. The inertness of these canisters provides an exceptional storage environment, particularly for polar and high boiling point compounds.

PDF Document

Gas Sampling Bags: Cost-Effective Alternatives for Air Monitoring

Gas sampling bags can be a cost-effective alternative to canisters and thermal desorption tubes for many air monitoring applications, including VOCs and permanent gases. This 4-page flyer provides general guidelines, product specifications, and recommended applications. (PDF - 953kB)

PDF Document

Restek Airmail, 2012 vol. 1

This 4-page newsletter includes an analysis of Massachusetts DEP air-phase petroleum hydrocarbons, as well as an update on the U.S. EPA Photochemical Assessment Monitoring Stations (PAMS) program. Also features Tedlar® bags and air canisters. (PDF - 774kB)

PDF Document

Airmail, 2012 vol. 2

This issue of Airmail includes a fast, sensitive analysis of TO-15 volatiles on a 30 m column, as well as an update on opportunities for air labs to collaborate with the EPA to meet Agency measuring and monitoring needs. Also features Tedlar® bags. (PDF - 867kB)

PDF Document

Airmail, 2013 vol. 1

This issue of Airmail includes a 16 min GC analysis of TO-15 volatiles on a 30 m column, as well as an update on EPA guidance documents on vapor intrusion. Also features gas standards. (PDF - 1025kB)

PDF Document

Restek Ultra-Clean Resin

Restek-exclusive Ultra-Clean resin is a great alternative to XAD®-2 resin for sampling semivolatiles. Learn more about how our GC-tested resin, as well as our polyurethane foam (PUF) plugs, can help you with your ambient, indoor, and industrial hygiene air-sampling applications. (PDF - 656kB)

PDF Document

Ship Our Rugged Air Canisters at No Extra Cost

Air sampling canisters from Restek are durable, easy to use, and highly inert. They weigh just grams more than canisters from other vendors and cost the same to ship. Check out this weight and cost comparison to see for yourself! (PDF - 1795kB)

PDF Document

Airmail, 2013 vol. 2

This issue of Airmail discusses the increasing interest in testing volatile methylsiloxane (VMS) compounds in biogas using a new whole air canister-based GC-MS method developed for trimethyl silanol (TMS). Also features an air sampling canister weight comparison. (PDF - 1073kB)

PDF Document

Increase Productivity With Restek’s Faster GC Method for Analyzing VOCs in Air

Labs analyzing VOCs in air can nearly double sample throughput, while meeting all Method TO-15 performance requirements, by adopting Restek’s short column approach. As shown here, the use of an Rxi®-5Sil MS column (30 m x 0.32 mm ID, 1.00 µm) allows all requirements to be met in almost half the time required by typical 60 m setups. (PDF - 984kB)

PDF Document

Thermal Desorption Tubes: Versatile Air Sampling for a Wide Range of Applications

This flyer give an overview of TD sampling and describes many applications that can be sampled using this versatile technique. Includes a comparison of tube and canister sampling, to help you determine which VOC sampling technique is best for you. (PDF - 177kB)

PDF Document

Whole Air Sampling for Vapor Intrusion

This 2-page note describes the features and benefits of our popular TO-Can® air monitoring canisters (SUMMA® can equivalents), our new canister air sampling timer, and our convenient, reliable passive air sampling kits. (PDF - 206kB)

PDF Document

Thermal Desorption: A Practical Applications Guide: I. Environmental Air Monitoring and Occupational Health & Safety

Thermal desorption is now recognized as the technique of choice for environmental air monitoring and occupational health and safety. This 28-page publication from Markes International Ltd. presents several real world thermal desorption applications. (PDF - 1137kB)

PDF Document

Thermal Desorption: A Practical Applications Guide: IV. Food, Flavour, Fragrance & Odour Profiling

Thermal desorption is used extensively for measuring volatile and semivolatile components in foods, flavors, fragrances, and odors. This 28-page publication from Markes International Ltd. presents several key applications. (PDF - 1952kB)

PDF Document

Thermal Desorption: A Practical Applications Guide: III. Defence and Forensic

Thermal desorption is used extensively for forensic science. This 16-page publication from Markes International Ltd. presents several key applications including drugs, arson accelerants, trace explosives, shotgun propellant, and inks. (PDF - 665kB)

PDF Document

High Capacity TO-Clean Canister Cleaning System Improves Lab Efficiency

Cut cleaning time in half with a TO-Clean air canister cleaning system. This high-capacity unit hold twice as many air cans as similar products and is fully automated and easy to use. You can create and save custom cleaning programs that ensure consistency and make operation as easy as pressing start and walking away. (PDF - 1077kB)

PDF Document

Thermal Desorption: A Practical Applications Guide: II. Residual Volatiles & Materials Emissions Testing

Thermal desorption is a convenient, fully automated alternative to solvent extraction for measuring residual volatiles. This 32-page publication from Markes International Ltd. details the testing of a wide variety of products using thermal desorption. (PDF - 1480kB)

PDF Document

Guide to Whole Air Canister Sampling

Ambient air sampling involves collecting a representative sample of ambient air for analysis. There are two general approaches: 1) “whole air” sampling with canisters or Tedlar® bags and 2) “in-field concentration” sampling using sorbent tubes or cold traps. In this guide, we focus on collecting whole air samples in canisters, a flexible technique with many applications. (PDF - 1408kB)

PDF Document

Air Monitoring Restek Essentials: Innovative Air Monitoring Solutions

A special issue of the Restek Essentials focused on air monitoring. Features products for sample collection through analysis, including whole air canisters, thermal desorption tubes, high purity resin, PUFs, gas standards, and GC columns and accessories. (PDF - 661kB)