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Quadrex Corporation was founded in 1976 in order to provide commercially available, high quality capillary columns to the gas chromatography market.
Quadrex Corporation was founded in 1976 in order to provide commercially available, high quality capillary columns to the gas chromatography market. Prior to this time, chromatographers often produced their own columns in-house due to patent locks on column technology. At that time, highly active stainless steel or fragile borosilicate capillary columns with nonbonded stationary phases and low temperature limits were the norm.
In 1980, shortly after the introduction of flexible fused silica tubing, Quadrex was the first column manufacturer to offer the now state-of-the-art fused silica columns to the GC community. Fused silica tubing eliminated a host of problems with GC columns such as fragility, installation difficulty, and surface activity. Combined with the development of bonded phase technology, the resulting columns allowed for improved surface deactivation and higher operating temperature limits.
Backed by 34 years of column manufacturing and GC expertise, Quadrex offers excellent product quality and service to chromatographers world-wide, including free application support. In the competitive GC column market, our longevity is a sign of success but we continually strive to improve and innovate in order to fulfill our customers' needs.
Today, Quadrex manufactures a full line of flexible, inert fused silica capillary columns in two levels. We offer the standard line of bonded phases from the nonpolar dimethyl and mid-polarity methylphenyl and cyanopropylphenyl polysiloxanes to the polar 23-type phases. Bonded PEG phases, Carbowax, and FFAP, are also included in the product line. Quadrex columns are produced using high purity fused silica in 0.1, 0.18, 0.25, 0.32, and 0.53 mm IDs in lengths from 5 meters to 105 meters. Quadrex columns are available in 0.05 microns up to 5.0 microns for most phases and up to 18.0 microns for nonpolar phases.
In addition to the standard line of columns, Quadrex offers high temperature low bleed "MS" columns in 1MS, 5MS, 35MS, and 17MS phase types. These low bleed phases have been engineered to produce excellent column efficiencies and inertness for high temperature and/or GC–MS applications.
Specialty columns are produced for specific applications such as the 624 phase for volatiles, and the 225 cyanopropyl phenyl polysiloxane for pharmaceutical applications. Specially modified oxygen-resistant bonded Carbowax columns are produced for solvents, flavors, and essential oil applications.
Beyond the standard column products, the flexibility of our manufacturing process allows for any custom length and film thickness (within the limits of the specific phase type). All Quadrex columns are individually tested to ensure conformity to specs showing excellent inertness, efficiency, and column-to-column reproducibility.
PO Box 3881
Woodbridge, CT 06525
TOLL FREE: (800) 275-7033
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