Gas Chromatography

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Gas Chromatography

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Attention Thomas Scientific Customers

Due to current pandemic, lead times for PPE items are longer than what is listed on our website. Please expect shipping delays of all PPE products during this time.

  • Our patented dual Vespel ring inlet seal greatly improves injection port performance—it stays sealed, even after repeated temperature cycles, without retightening the reducing nut! This seal features two soft Vespel rings, one embedded in its top surface and the other embedded in its bottom…

  • Use with liquids and gases for pressure or vacuum applications Breaking pressure is 0.18 psi, closing pressure is 0.014 psi Install in any position

  • Tedlar® Gas Sampling Bag


    Tedlar is recommended in several US EPA methods for sampling VOCs and sulfur compounds. Our Tedlar is made from a high-quality 2 mil Tedlar film for superior inertness, impermeability, sample integrity and good recovery data. Our Push Lock Valve (PLV) and seam-sealing process ensure that these bags…

  • Produces square, smooth cuts in 1/16-inch tubing Eliminates tubing distortion Cuts hard or soft copper, aluminum, brass, stainless steel, Monel alloy, or titanium Replaceable cutting wheel

  • Reduces water to less than 10 ppb; indicator changes from yellowish-green to blue at 5% relative humidity Prepurged for fast stabilization Reduces noise from high-sensitivity detectors Heavy-walled glass body prevents oxygen and water infusion 10 µm frit prevents microparticulate…

  • Purged with ultra-high-purity helium; ready to use with any carrier gas including hydrogen Reduces water to less than 15 ppb Maximum operating pressure: 250 psi (1,724 kPa) Maximum flow: 1.25 L/min

  • UHP brass regulators are the best choice when using ultra-high purity carrier gas for sensitive GC applications using MS, PID, or ECD detection methods. They feature reduced internal dead volume relative to stainless steel bodies. The 316L stainless steel diaphragm valve ensures leak-free shutoff.…

  • Nitrogen Generators

    Parker Hannifin

    NitroFlow Lab The Parker Balston® LC-MS NitroFlow Lab is a self-contained membrane nitrogen generator that produces LC-MS grade nitrogen with output pressure to 116 psig. Nitrogen is produced by utilizing a combination of compressors, carefully matched with filtration, and membrane…

  • Eliminates handling costly, dangerous gas cylinders Reliable source of gas No more cylinder changing Silent operation Simple annual maintenance State-of-the-art, self contained Balston® Lab Gas Generators are a sensible alternative to old technology gas cylinders. They are cost effective…

  • Racks feature alphanumeric indexing for easier vial identification. Racks can be stacked for efficient storage. Fits most 2.0 mL, 12 x 32 mm vials (vials sold separately).

  • Inspect inside surfaces of sample cylinders or other chambers 14" reach 100,000-hour LED life

  • Prevent small leaks from causing big problems with a Restek leak detector. Detects a broad range of gases and indicates leak severity with both an LED display and audible tone. No more waiting for a full charge—can be operated during charging or used up to 12 hours between charges.…

  • Choose preslit caps (available for some vials) to reduce the risk of needle bending, release vacuum from high-volume injections, and improve injection reproducibility when greater than 20% of vial volume is withdrawn.

  • These MXT connectors can be used with fused silica tubing because of a Valcon polyimide, 1/32-inch, one-piece fused silica adaptor. This unique graphite-reinforced composite allows a capillary column to slide into the adaptor and be locked in place simply by loosening and tightening the fitting. …

  • Graphite Ferrules Preconditioned to eliminate outgassing. High-purity, high-density graphite. Smoother surface and cleaner edges than conventional graphite ferrules. Contain no binders that can off-gas or adsorb analytes. Stable to 450°C. Vespel/Graphite Ferrules …

  • MW-72 G.C. collection tubes are sold 12/Pkg.  Vials are supplied complete with Viton o-ring (MW-100-01), PTFE faced septa (MW-104-11) and open-top screw cap (MW-102-11).

  • Available in brass or stainless steel.

  • High-quality miniature wrenches to use with MXT low-dead-volume connectors.

  • The inlet seal at the base of the Agilent 5890/6890/7890 GC injection port contacts the sample and must be changed frequently to prevent adsorption of active compounds. In addition, septum fragments and sample residue accumulate on the disk surface, requiring disk replacement. To reduce…

  • The innovative design of Restek’s high power crimping tool features interchangeable jaws, so you only need one tool and can purchase crimpers and decappers in the sizes that meet your laboratory’s needs. The separate crimper and decapper jaw sets fit standard lab vial seals that are…

  • The Parker HydroGen Mate DI Water System is specifically designed to provide the high-purity deionized water needed by all models of Parker hydrogen generators. The system is ready to install and is shipped complete with prefiltration cartridge, two DI resin exchange cartridges, final filter, and…

  • Gas Clean Filters

    Agilent Technologies

    The Gas Clean Filter System delivers clean gases, reducing the risks of column damage, sensitivity loss and instrument downtime.

  • Prevent serious injuries! These holders are designed to prevent free-standing gas cylinders from tipping over and injuring personnel. The cast aluminum holder can be secured to a wall or the side of a work bench. Each mount will secure a cylinder 4-15 inches in diameter.

  • Graphite Tubes

    Agilent Technologies

    Graphite tubes are quality tested to ensure each batch passes our demanding performance specifications for contamination, sensitivity, precision, electrical resistance and lifetime. Use partitioned tubes for general purpose work and when you need the best detection limits with samples that…

  • Diamond file: a useful tool for cutting capillaries and smoothing ends of capillaries. Square capillary ends without protruding particles are especially important for butt connections (e.g., in Valco unions). Magnifying lens: a very versatile tool for any laboratory. In capillary GC it is…

  • Ideal for high-flow split applications >500 mL/min on Agilent 5890 GCs Siltek treatment provides enhanced inertness versus stainless steel All seals include washers

  • These low dead volume connectors are Siltek treated to make them inert to active compounds, just like our MXT columns. They can be used at temperatures up to 430°C without degrading the deactivated layer. Purchase the appropriate ferrules for connecting 0.28, 0.32, or 0.53 mm ID tubing. Each…

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