Gas Chromatography Products & Reviews

The TT24-7 continuous air/gas monitoring system incorporates two electrically-cooled traps which operate in tandem to ensure 100% data capture.   The TT24-7 thermal desorption system is a robust, transportable thermal desorption unit, convenient for installation onsite or in mobile response vehicles as well as conventional laboratories. The TT24-7 interfaces to GC(MS) or process MS technology and incorporates two electri…

ACTI-VOC™ is a robust low-flow pump for sampling vapour-phase organic compounds (VOCs) onto sorbent tubes for subsequent analysis by thermal desorption (TD). Being lightweight, easy-to-use and intrinsically safe, ACTI-VOC is ideal for personal monitoring and a wide range of other air and gas sampling applications. Optimised for thermal desorption tubes Unlike other personal monitoring pumps on the market, ACTI-VOC is optimised…

On-line sampling module for the UNITY-xr™ thermal desorber

Thermal desorption sorbent sampling tubes for air sampling. Backed up by fast and friendly service, Markes’ tubes provide optimum sampling and analytical performance. Our range includes everything from cost-effective packages of industry-standard tubes to the last word in sorbent tube innovation. Features: Our industry-standard (3½-inch (89 mm) long x ¼-inch (6.4 mm) o.d.) sorbent tubes are available in stainless stee…

Accurate and repeatable gas flow measurement. Accurate and repeatable gas flow measurement is fundamental to obtaining good results from your thermal desorption-gas chromatograph. The traditional bubble flowmeter, relying as it does on the reaction time of the operator, is a potential source of error.The digital flowmeter eliminates this source of error and makes gas flow easement easier and more accurate. The flowmeter allow…

Water removal device for use with UNITY™–Air Server-xr™ thermal desorption systems.

The single-channel Agilent 8850 Gas Chromatograph (GC) system combines the small footprint and compact oven of the Agilent 6850 GC with the same built-in intelligence and high performance of the 8890 GC. It was designed for energy efficiency and ease of maintainance to help laboratories meet their sustainability goals and lower their operating costs.

Agilent J&W Biodiesel GC columns are purposely designed and application-optimized for the analysis of biodiesel to meet the ASTM and CEN testing standards

The Agilent J&W Cyclo Sil-B GC Columns perform chiral separations without chiral specific derivations. Agilent makes more capillary columns than anyone else in the world and our commitment to product reliability and repeatability has raised the level of quality that chromatographers demand. We continue to tighten our performance criteria such as separation efficiency, retention characteristics, peak height ratios, and bleed ra…

DuraGuard columns are made with a single, continuous piece of tubing consisting of a built-in length of deactivated fused silica tubing and an analytical column. Difficult samples, such as pesticides or drugs, can be analyzed without any undesirable contributions from the unions.

Agilent J&W CP-Carbowax 400 for Volatiles in Alcohol has the highest resolution for amyl alcohols, for accurate quality control. Its high plate number, even at 0 °C, delivers for reliable analysis of the most volatile compounds. It is specially designed and tested for this application, ensuring performance and column-to-column reproducibility.

This leading-edge column technology is ideal for applications that require faster run times, such as high-throughput screening, fast process monitoring, and fast method development. Agilent High Efficiency GC columns can reduce sample run time by 50% or more without compromising resolution.

Agilent J&W VF-5ht improves the analysis of high boiling compounds with low-bleed performance, even at high temperatures. Based on ultra-low-bleed technology, VF-5ht provides unmatched selectivity, sensitivity, and accuracy for the analysis of high molecular weight compounds. Temperature limits -60 to 400 °C for fused silica and -60 to 450°C for Ultimetal stainless steel.

Agilent J&W DB-ALC1 and DB-ALC2 analytical column enable two minute analyses by reducing run time by one-third compared to other blood alcohol analysis columns.

Agilent J&W VF-DA is a unique, guaranteed low-bleed column for forensic drug confirmation testing. The column has high recovery for trace components and excellent resistance to direct methanol injections. Forensic drugs are measured in a variety of matrixes.

Agilent J&W HP-Fast Residual Solvent columns are equivalent to U.S.P phase G43. They feature a thinner film that reduces run times by a factor of 2.5 compared to columns of standard film thickness. These HP-Fast Residual Columns are bonded and cross-linked.

Agilent J&W LTM Column Module combines a high-quality fused silica capillary column with heating and temperature sensing components for a low thermal mass column assembly. The LTM Column module has a patented design that heats and cools the column very efficiently for significantly shorter analytical cycle times compared to conventional air-bath GC oven techniques, while simultaneously using less power. 

Agilent J&W VF-1ms is a highly inert, nonpolar 100% dimethylpolysiloxane phase, ultra-low-bleed GC column providing increased sensitivity over a broad array of applications, particularly for energy, pharmaceutical, and environmental analyses. 

Agilent J&W VF-5ms is an inert 5% phenyl-methyl column for increased sensitivity, accuracy and instrument uptime. The column has the lowest guaranteed bleed specification of 1 pA at 325 °C (30 m, 0.25 mm, 0.25 µm). 

Agilent J&W DB-ProSteel metal columns are deactivated with a special process treatment formula to provide good inertness. The columns can be custom-wound on request for small GC ovens. DB-ProSteel has the same outer diameter as standard megabore columns of 0.53 mm id so no special ferrules are required for proper installation.

Agilent J&W HP-101 is a 100% dimethylpolysiloxane phase. It is not bonded or cross-linked, and is therefore useful for established methods that do not require the column to have cross-linked or bonded polymer phases. Note: Because HP-101 columns are not bonded or cross-linked, we do not recommend solvent rinsing.

Agilent J&W Carbowax 20M and HP-20M are polyethylene glycol (PEG) columns equivalent to USP phase G16. Their temperature range of 60 to 220 ºC is ideal for alcohols, free acid, ether, glycol, and solvents. Carbowax 20M and HP-20M are not bonded or cross-linked and so solvent rinsing is not recommended. DB-WAX is the bonded alternative for HP-20M.

Agilent J&W Select PAH is the first capillary column that provides a single solution for PAH analysis by separating all the isomers, thereby avoiding false positives and inaccurate results. It provides easy, fast, and accurate quantification of PAHs in environmental and food samples by resolving PAH isomers.

Agilent J&W DB-EUPAH columns are designed and tested to provide the most optimal performance for all 16 EU-regulated polycyclic aromatic hydrocarbons (PAHs). The columns are individually tested with an application-specific QC test probe mixture and deliver excellent resolution of critical PAH isomers, such as benzo(b,j,k)fluoranthene.

Agilent J&W CP-Sil PAH CB UltiMetal combines the advantages of a highly thermo-stable stationary phase with UltiMetal stainless steel as the column material. This unique column separates all 16 PAHs according to EPA method 610.