Restek Allure®C18 Columns USP L1

Excellent Columns for LC/MS and ELSD

particle size: 5μm, spherical
pore size: 60Å
carbon load: 27%
endcap: fully endcapped
pH range: 2.5 to 8
temperature limit: 80°C
Most retentive of our alkyl stationary phases due to large surface area of the base silica and high-density bondings. Provides excellent peak shapes for a wide range of compounds. Similar Phase(s):

Ultracarb C18, BetaMax Neutral, Discovery C18

particle size: 3μm or 5μm, spherical
pore size: 110Å
carbon load: 13%
endcap: fully endcapped
pH range: 2.5 to 8
temperature limit: 80°C
Excellent choice as a general purpose C18 column. Intermediate carbon loading and surface area, suitable for a wide range of acidic to neutral hydrophobic compounds. Replaces Hypersil^® ODS and Pinnacle^® C18. Similar Phase(s):

Hypersil ODS

With Raptor™ LC columns, Restek chemists became the first to combine the speed of superficially porous particles (also known as SPP or “core-shell” particles) with the resolution of highly selective USLC® technology. This new breed of chromatographic column allows you to more easily achieve peak separation and faster analysis times without expensive UHPLC instrumentation.

The birth of Restek’s Raptor™ SPP LC column line began with the innovative Biphenyl phase, but it has quickly grown to include a new Restek® phase: the ARC-18. Designed and intended specifically for use on LC-MS/MS systems, the Raptor™ ARC-18 column features a well-balanced retention profile without the drawbacks of using an ordinary C18 in the harsh, acidic mobile phases needed for mass spectrometry (MS). Even after extended use in these low-pH (≤ 2.0) conditions, the sterically protected ARC-18 offers consistent retention, peak shape, and response for charged bases, neutral acids, small polar compounds, and more.

• Ideal for high-throughput LC-MS/MS applications with minimal sample preparation.
• Well-balanced retention profile for better detection and integration of large, multiclass analyte lists.
• Sterically protected to endure low-pH mobile phases without sacrificing retention or peak quality.
• Part of Restek’s Raptor LC column line featuring 1.8 and 5 μm SPP core-shell silica.

Raptor 1.8 µm columns are designed and QC tested for maximum lifetime under UHPLC pressures. And, because they are Raptor SPP LC columns, they offer the peak capacity, selectivity, and reproducibility that analysts have learned to depend on from Restek.

Excellent for a wide range of analyses

particle size: 3μm or 5μm, spherical
pore size: 100Å
carbon load: 20%
endcap: fully endcapped
pH range: 2.5 to 8
temperature limit: 80°C
A retentive, high-purity packing that exhibits excellent peak shape for a wide range of compounds. Excellent general-purpose reversed phase column. Similar Phase(s):

Discovery C18, Symmetry C18, Hypersil Gold C18, Luna C18, Zorbax C18, Kromasil C18, LiChrospher RP-18, Inertsil ODS-2, Develosil C18

To lower costs and improve profitability, you need columns to last
longer, data to be reproducible, and existing HPLC instrumentation to
run faster. Get there with the only general-purpose C18 that gives you
Selectivity Accelerated.

• A traditional end-capped C18 ideal for general-purpose use in reversed-phase chromatography.
• Wide pH range (2–8) provides excellent data quality for many applications, matrices, and compounds.
• Offers the highest hydrophobic retention of any Raptor™ phase.

Restek has brought the benefits of Raptor columns to those who have made the leap to UHPLC instruments, yet are still looking to boost their efficiencies further. Already sold with 2.7 and 5 µm superficially porous particles (SPP), Raptor columns are now available with 1.8 µm particles specifically for use with UHPLC. Choose from four distinctive Restek phase chemistries: Biphenyl, ARC-18, C18, and FluoroPhenyl.

Raptor 1.8 µm columns are designed and QC tested for maximum lifetime under UHPLC pressures. And, because they are Raptor SPP LC columns, they offer the peak capacity, selectivity, and reproducibility that analysts have learned to depend on from Restek.

Excellent Columns for LC/MS and ELSD

particle size: 5μm spherical
pore size: 60Å
endcap: no
pH range: 2.5 to 8
temperature limit: 80°C
Highly retentive and selective phase for separating polar analytes, including polar acidic compounds. Compatible with highly aqueous (up to 100%) mobile phases. Highly base deactivated. An excellent choice when analyzing a wide range of compounds, as in LC/MS screening methods.

particle size: 1.9μm, 3μm, or 5μm, spherical
pore size: 140Å
carbon load: 6%
pH range: 2.5 to 8
temperature limit: 80°C
Highly selective phase for polar analytes. Compatible with highly aqueous (up to 100%) mobile phases. Silica manufactured by Restek. Part of the Restek USLC™ column set, which offers the widest range of reversed phase selectivity available! Similar Phase(s):

Aquasil C18, AQUA C18, Hypersil Gold AQ, YMC ODS-Aq

particle size: 1.9μm, 3μm, or 5μm, spherical
pore size: 140Å
carbon load: 11%
endcap: yes
pH range: 2.5 to 8
temperature limit: 80°C
Highly base-deactivated spherical silica manufactured by Restek. Monomeric C18 bonding. Hydrophobic C18 phase suitable for analyses of a wide range of compounds, from acidic through slightly basic. Replaces Hypersil^® BDS C18 and Pinnacle^® ODS Amine. Similar Phase(s):

Hypersil BDS C18, Zorbax Eclipse XDB-C18, Spherisorb ODS

particle size: 3μm or 5μm, spherical
pore size: 300Å
carbon load: 9%
endcap: yes
pH range: 2.5 to 8
temperature limit: 80°C
Highly base-deactivated wide pore packing that exhibits excellent peak shape for a wide range of compounds. Excellent general-purpose column for analyzing large molecules and biomolecules. Similar Phase(s):

BioBasic 18, Symmetry 300 C18, Jupiter 300 C18, Zorbax 300 OSB C18, Synchropak C18, 208 TP C18

particle size: 3μm or 5μm, spherical
pore size: 100Å
carbon load: 15%
endcap: no
pH range: 2.5 to 8
temperature limit: 80°C
Highly retentive and selective for reversed phase separations of polar analytes. Highly base-deactivated. Compatible with highly aqueous (up to 100%) mobile phases. Part of the Restek USLC™ column set, which offers the widest range of reversed phase selectivity available! Similar Phase(s):

AQUA C18, Aquasil C18, Hypersil Gold AQ, YMC ODS-Aq