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Essentials

Columns

Rxi Capillary GC Columns

Leverage the outstanding inertness, low bleed, and high reproducibility of Rxi GC Columns with 3-in-1 technology to gain:
  • Accurate Data
  • The Right Results Fast
  • Maximized Instrument Uptime

Rxi-1ms Columns (fused silica)

nonpolar phase; Crossbond dimethyl polysiloxane

  • General-purpose columns for arson accelerants, essential oils, hydrocarbons, pesticides, PCB congeners (e.g., Aroclor mixes), sulfur compounds, amines, solvent impurities, simulated distillation, oxygenates, gasoline range organics (GRO), refinery gases.
  • Tested and guaranteed for ultra-low bleed; improved signal-to-noise ratio for better sensitivity and mass spectral integrity.
  • Temperature range: -60 °C to 330/350 °C.
  • Equivalent to USP G1, G2, and G38 phases.

Rxi-5ms Columns (fused silica)

low-polarity phase; Crossbond diphenyl dimethyl polysiloxane

  • General-purpose columns for semivolatiles, phenols, amines, residual solvents, drugs of abuse, pesticides, PCB congeners (e.g., Aroclor mixes), solvent impurities.
  • Most inert column on the market.
  • Tested and guaranteed for ultra-low bleed; improved signal-to-noise ratio for better sensitivity and mass spectral integrity.
  • Temperature range: -60 °C to 330/350 °C.
  • Equivalent to USP G27 and G36 phases.

Rxi-5Sil MS Columns (fused silica)

low-polarity phase; Crossbond 1,4-bis(dimethylsiloxy)phenylene dimethyl polysiloxane

  • Engineered to be a low-bleed GC-MS column.
  • Excellent inertness for active compounds.
  • General-purpose columns—ideal for GC-MS analysis of semivolatiles, polycyclic aromatic compounds, chlorinated hydrocarbons, phthalates, phenols, amines, organochlorine pesticides, organophosphorus pesticides, drugs, solvent impurities, and hydrocarbons.
  • Temperature range: -60 °C to 350 °C.

Rxi-XLB Columns (fused silica)

low-polarity proprietary phase

  • General-purpose columns exhibiting extremely low bleed. Ideal for many GC-MS applications, including pesticides, PCB congeners (e.g., Aroclor mixes), PAHs.
  • Unique selectivity.
  • Temperature range: 30 °C to 360 °C.

Rxi-624Sil MS Columns (fused silica)

midpolarity Crossbond phase

  • Low-bleed, high-thermal stability column—maximum temperatures up to 300–320 °C.
  • Inert—excellent peak shape for a wide range of compounds.
  • Selective—G43 phase highly selective for volatile organics and residual solvents, great choice for USP<467>.
  • Manufactured for column-to-column reproducibility—well suited for validated methods.

Rxi-17Sil MS Columns (fused silica)

midpolarity Crossbond phase

  • Excellent inertness and selectivity for active environmental compounds, such as PAHs.
  • Low bleed for use with sensitive detectors, such as MS.
  • 340/360 °C upper temperature limits.
  • Equivalent to USP phase G3.

Rxi-65TG Columns (fused silica)

High-polarity Crossbond phase

  • Ideal for the analysis of triglycerides in edible oils.
  • Excellent thermal stability up to 370 ˚C ensures consistent results and longer column lifetimes.
  • Separate and quantify critical triglycerides (acylglycerols) without interference from column bleed.
  • Observe even underivatized mono- and diglycerides.
  • Novel manufacturing techniques ensure consistent column-to-column quality.

Metal MXT Capillary GC Columns

The perfect fit for portable, process, and high-temperature GC analysis.

MXT-1 Columns (Siltek-treated stainless steel)

nonpolar phase; Crossbond dimethyl polysiloxane

  • General-purpose columns for solvent impurities, PCB congeners (e.g., Aroclor mixes), gases, natural gas odorants, sulfur compounds, essential oils, hydrocarbons, semivolatiles, pesticides, and oxygenates.
  • Equivalent to USP G1, G2, G38 phases.
  • 4.5" standard coil diameter.

MXT-Biodiesel TG Columns (Siltek-treated stainless steel)

  • Fast analysis times and sharp mono-, di-, and triglyceride peaks.
  • Stable at 430 °C for reliable, consistent performance.

MXT-WAX Columns (Siltek-treated stainless steel)

polar phase; Crossbond Carbowax polyethylene glycol—provides oxidation resistance

  • General-purpose columns for FAMEs, flavor compounds, essential oils, amines, solvents, xylene isomers, and U.S. EPA Method 603 (acrolein/acrylonitrile).
  • Equivalent to USP G14, G15, G16, G20, and G39 phases.
  • 4.5" standard coil diameter.

MXT-624 Columns (Siltek-treated stainless steel)

low- to midpolarity phase

  • Application-specific columns for volatile organic pollutants. Recommended in U.S. EPA methods for volatile organic pollutants.
  • Temperature range: -20 °C to 280 °C.
  • Equivalent to USP G43 phase.
  • 4.5" standard coil diameter.

MXT-1HT SimDist Column (Siltek-treated stainless steel)

nonpolar phase

  • Lowest bleed for longest column lifetime.
  • Reliably meets all ASTM D2887, D6352, D7169, D7213, and D7500 specifications.
  • 100% dimethyl polysiloxane phase allows easy comparisons to historical data.
  • Individually tested for guaranteed performance.
  • 7" coil diameter.
  • Temperature range: -60 to 450 °C.*
*Maximum temperature varies by cat.#; see column-specific temperatures.

Raptor SPP Core-Shell LC Columns

The speed of SPP with the resolution of USLC technology for fast, efficient method development that delivers:
  • Drastically faster analysis times.
  • Substantially improved resolution.
  • Increased sample throughput with existing HPLC and UHPLC instrumentation.
  • Dependable reproducibility.

UltraShield UHPLC PreColumn Filter

  • Cost-effective protection for UHPLC systems.
  • Reliable way to filter out particulates and extend column lifetime.
  • Minimize extra column volume and maximize UHPLC sample throughput vs. guard cartridges.
  • Connects easily to any column with Parker-style ports; not compatible with Waters columns.
  • Leak tight to 15,000 psi (1,034 bar).
  • 0.5 µm or 0.2 µm stainless-steel frit in a stainless-steel body with PEEK ferrule.

Raptor EXP Guard Column Cartridges

  • Free-Turn architecture lets you change cartridges by hand without breaking inlet/outlet fluid connections—no tools needed.
  • Patented titanium hybrid ferrules can be installed repeatedly without compromising high-pressure seal.
  • Auto-adjusting design provides ZDV (zero dead volume) connection to any 10-32 female port.
  • Guard column cartridges require EXP direct connect holder (cat.# 25808).
  • Pair with EXP hand-tight fitting (cat.# 25937–25938) for tool-free installation.

Reference Standards

Supplies & Accessories

Indicating Carrier Gas Purifier

  • Removes multiple impurities such as O2, H2O, CO2, CO, halogenated compounds, siloxanes, hydrocarbons (heavier than butane), sulfur-containing molecules, and ammonia from inert gases (He, Ar, N2, and H2).
  • Can be used with other filters to provide endpoint detection.
  • Contains highly sensitive visual indicators for oxygen and water contamination. The oxygen indicator signals breakthrough when the adsorbent changes from green to grey, and the moisture indicator signals breakthrough by changing from blue to brown.
  • Heavy-walled inner glass tube is protected by a sealed outer plastic tube to further protect against leaks.

Indicating Detector Gas Purifier

  • Removes moisture and hydrocarbons (C5 and heavier) from dry air or inert gases.
  • Indicator signals breakthrough by changing from yellowish green to blue at low relative humidity to warn of leaks in the gas stream.
  • The inner glass tube contains activated carbon, moisture indicator, and molecular sieve.
  • 10 μm frits at both ends of the filter.
  • Heavy-walled inner glass tube is protected by a sealed outer plastic tube to further protect against leaks.

Cleaned Copper Tubing

  • Use for plumbing GC systems.
  • Proprietary cleaning process used to remove residual organics.
Note: While this tubing is ultra clean, it does not meet the requirements for oxygen service specifications (for example, CGA G – 4.1, ASTM G93-03, ASTM A380).

UltraShield UHPLC PreColumn Filter

  • Cost-effective protection for UHPLC systems.
  • Reliable way to filter out particulates and extend column lifetime.
  • Minimize extra column volume and maximize UHPLC sample throughput vs. guard cartridges.
  • Connects easily to any column with Parker-style ports; not compatible with Waters columns.
  • Leak tight to 15,000 psi (1,034 bar).
  • 0.5 µm or 0.2 µm stainless-steel frit in a stainless-steel body with PEEK ferrule.

Sample Handling

Resprep Quick-Replace SPE Vacuum Manifolds (12- or 24-Port)

  • Disposable, quick-replace valve liners ensure a clean flow path and eliminate cross-contamination of samples extracted on the same port.
  • Individual screw-type valves in each SPE port provide precise flow control.
  • Easily modified sample collection rack supports a wide variety of collection vessels.
  • Screw-type, solvent-resistant vacuum gauge and bleed valve offer better sealing and vacuum control.
  • Compatible with any standard male luer end SPE cartridge.

Resprep PLR SPE Products

  • Remove both proteins and phospholipids from biological samples in one easy, high-efficiency procedure.
  • Avoid signal suppression by removing interfering phospholipids from the sample matrix.
  • No method development—straightforward and effective sample preparation for acids, bases, and neutral compounds.
  • Offered in 96-well plate format for high-throughput or automated workflows and in cartridge format for lower throughput applications.
  • 3-way versatility for filtration—compatible with all common devices:
    • Vacuum manifolds
    • Positive pressure manifolds
    • Centrifugation

radiello Passive Diffusive Air Samplers

  • Unique 3D radial design is not prone to face velocity effects and delivers higher uptake rates than standard 2D flat axial devices.
  • Higher uptake rates give excellent low-level sensitivity, even for short sampling periods (down to 15 min).
  • Higher capacity allows you to sample accurately up to 30 days without bias from breakthrough or back diffusion.
  • Versatile, easy-to-use air sampler for a wide range of chemical classes is ideal for environmental monitoring, vapor intrusion, industrial hygiene, and personal air sampling.
  • Solvent and thermal desorption options available.
  • Features water repellant diffusive body and reusable holders.
  • Easy to use—no pump required.

Resprep Polymeric SPE Cartridges and 96-Well Plates (Reversed Phase)

  • Silica-free, bonded polymeric material—no unwanted secondary silica interactions, even with basic compounds.
  • High surface area—higher loading capacity compared to silica-based sorbents.
  • Stable over a wide pH range (0–14)—won’t hydrolyze under extreme conditions.
  • Water-wettable—streamlined conditioning and equilibration steps drastically reduce solvent usage and sample prep time.
  • No flow-rate dependence—maintains retention and capacity after conditioning, even if dried out from vacuum or positive pressure flows.
  • Choose cartridges for high loading capacity; 96-well plates for high throughput and automation.