Restek Raptor ARC-18 90Å Series | for low-pH LC-MS applications

Raptor ARC-18 90Å Series

Restek Raptor™ ARC-18 90 Å HPLC Columns

Robust Reversed-Phase Performance for Acidic, Basic, and Neutral Compounds

The Restek Raptor™ ARC-18 90 Å HPLC column series is designed to deliver exceptional versatility and reproducible performance for a wide range of reversed-phase HPLC and UHPLC applications. Combining Restek's innovative ARC-18 (Advanced Reproducible Chromatography) stationary phase with 2.7 µm superficially porous (core-shell) particle technology, these columns provide outstanding chromatographic efficiency, excellent peak symmetry, and long-term robustness across diverse analytical workflows.

Unlike conventional C18 columns that often require tightly controlled mobile phase conditions, the Raptor ARC-18 stationary phase is engineered to maintain consistent selectivity over a broad range of pH values and buffer concentrations. This balanced chemistry makes the column particularly suitable for laboratories that require reliable method transfer, routine quality control, and reproducible LC-MS/MS analyses.

The combination of high-efficiency core-shell particles and an advanced C18 bonded phase enables fast separations with moderate backpressure, allowing seamless operation on both conventional HPLC and modern UHPLC systems.

Key Benefits

Proprietary ARC-18 (Advanced Reproducible Chromatography) stationary phase for highly reproducible separations.
Excellent retention and peak shape for acidic, basic, and neutral compounds.
Balanced hydrophobic selectivity suitable for a broad range of pharmaceutical, environmental, food, and clinical applications.
Outstanding chromatographic efficiency using 2.7 µm superficially porous (core-shell) silica particles.
Excellent method robustness across varying mobile phase compositions.
Reduced back pressure compared to fully porous sub-2 µm particles.
Fully compatible with HPLC, UHPLC, and LC-MS/MS systems.
Long column lifetime and excellent batch-to-batch reproducibility.
Ideal for both routine analysis and complex method development.

Find more information in the Restek Raptor ARC-18 Brochure.

47 Products

Product Number	Description	Price	Specifications

RT-9314212

Raptor ARC-18 90Å 1.8µm, 2.1 x 100mm, ea.

EUR 1,125.00

Will be procured as soon as possible

Product Number: RT-9314212
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 1.8 µm
Pore Size: 90 Å
Carbon Load: 7.0 %
Endcapping: no
Column Length: 100 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 125 m2/g
Bonding Type: monomeric
Package Size: 1

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Price:

EUR 1,125.00

Will be procured as soon as possible

RT-931421E

Raptor ARC-18 90Å 1.8µm, 3.0 x 100mm, ea.

EUR 1,125.00

Will be procured as soon as possible

Product Number: RT-931421E
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 1.8 µm
Pore Size: 90 Å
Carbon Load: 7.0 %
Endcapping: no
Column Length: 100 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 125 m2/g
Bonding Type: monomeric
Package Size: 1

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Price:

EUR 1,125.00

Will be procured as soon as possible

RT-9314232

Raptor ARC-18 90Å 1.8µm, 2.1 x 30mm, ea.

EUR 995.00

Will be procured as soon as possible

Product Number: RT-9314232
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 1.8 µm
Pore Size: 90 Å
Carbon Load: 7.0 %
Endcapping: no
Column Length: 30 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 125 m2/g
Bonding Type: monomeric
Package Size: 1

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Price:

EUR 995.00

Will be procured as soon as possible

RT-9314252

Raptor ARC-18 90Å 1.8µm, 2.1 x 50mm, ea.

EUR 1,081.00

Will be procured as soon as possible

Product Number: RT-9314252
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 1.8 µm
Pore Size: 90 Å
Carbon Load: 7.0 %
Endcapping: no
Column Length: 50 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 125 m2/g
Bonding Type: monomeric
Package Size: 1

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Price:

EUR 1,081.00

Will be procured as soon as possible

RT-931425E

Raptor ARC-18 90Å 1.8µm, 3.0 x 50mm, ea.

EUR 1,081.00

Will be procured as soon as possible

Product Number: RT-931425E
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 1.8 µm
Pore Size: 90 Å
Carbon Load: 7.0 %
Endcapping: no
Column Length: 50 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 125 m2/g
Bonding Type: monomeric
Package Size: 1

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Price:

EUR 1,081.00

Will be procured as soon as possible

RT-9314262

Raptor ARC-18 90Å 1.8µm, 2.1 x 150mm, ea.

EUR 1,153.00

Will be procured as soon as possible

Product Number: RT-9314262
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 1.8 µm
Pore Size: 90 Å
Carbon Load: 7.0 %
Endcapping: no
Column Length: 150 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 125 m2/g
Bonding Type: monomeric
Package Size: 1

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Price:

EUR 1,153.00

Will be procured as soon as possible

RT-931450250

Raptor ARC-18 90Å 5µm, 4.6 x 5mm Guard Cartridge (EXP), pk.3

EUR 684.00

Available

Product Number: RT-931450250
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 5 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Guard Cartridge
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Accessories: Guard Cartridge
Package Size: 3

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Price:

EUR 684.00

Available

RT-931450252

Raptor ARC-18 90Å 5µm, 2.1 x 5mm Guard Cartridge (EXP), pk.3

EUR 684.00

Will be procured as soon as possible

Product Number: RT-931450252
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 5 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Guard Cartridge
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Accessories: Guard Cartridge
Package Size: 3

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Price:

EUR 684.00

Will be procured as soon as possible

RT-931450253

Raptor ARC-18 90Å 5µm, 3.0 x 5mm Guard Cartridge (EXP), pk.3

EUR 684.00

Will be procured as soon as possible

Product Number: RT-931450253
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 5 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Guard Cartridge
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Accessories: Guard Cartridge
Package Size: 3

Questions about the article To the product details

Price:

EUR 684.00

Will be procured as soon as possible

RT-9314512

Raptor ARC-18 90Å 5µm, 2.1 x 100mm, ea.

EUR 847.00

Will be procured as soon as possible

Product Number: RT-9314512
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 100 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Package Size: 1

Questions about the article To the product details

Price:

EUR 847.00

Will be procured as soon as possible

RT-9314515

Raptor ARC-18 90Å 5µm, 4.6 x 100mm, ea.

EUR 847.00

Will be procured as soon as possible

Product Number: RT-9314515
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 100 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Package Size: 1

Questions about the article To the product details

Price:

EUR 847.00

Will be procured as soon as possible

RT-931451E

Raptor ARC-18 90Å 5µm, 3.0 x 100mm, ea.

EUR 847.00

Will be procured as soon as possible

Product Number: RT-931451E
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 100 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Package Size: 1

Questions about the article To the product details

Price:

EUR 847.00

Will be procured as soon as possible

RT-931453E

Raptor ARC-18 90Å 5µm, 3.0 x 30mm, ea.

EUR 700.00

Will be procured as soon as possible

Product Number: RT-931453E
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 30 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Package Size: 1

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Price:

EUR 700.00

Will be procured as soon as possible

RT-9314552

Raptor ARC-18 90Å 5µm, 2.1 x 50mm, ea.

EUR 773.00

Will be procured as soon as possible

Product Number: RT-9314552
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 50 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Package Size: 1

Questions about the article To the product details

Price:

EUR 773.00

Will be procured as soon as possible

RT-9314555

Raptor ARC-18 90Å 5µm, 4.6 x 50mm, ea.

EUR 773.00

Will be procured as soon as possible

Product Number: RT-9314555
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 50 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Package Size: 1

Questions about the article To the product details

Price:

EUR 773.00

Will be procured as soon as possible

RT-931455E

Raptor ARC-18 90Å 5µm, 3.0 x 50mm, ea.

EUR 773.00

Will be procured as soon as possible

Product Number: RT-931455E
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 50 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Package Size: 1

Questions about the article To the product details

Price:

EUR 773.00

Will be procured as soon as possible

RT-9314562

Raptor ARC-18 90Å 5µm, 2.1 x 150mm, ea.

EUR 919.00

Will be procured as soon as possible

Product Number: RT-9314562
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 150 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Package Size: 1

Questions about the article To the product details

Price:

EUR 919.00

Will be procured as soon as possible

RT-9314565

Raptor ARC-18 90Å 5µm, 4.6 x 150mm, ea.

EUR 937.00

Will be procured as soon as possible

Product Number: RT-9314565
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 150 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Package Size: 1

Questions about the article To the product details

Price:

EUR 937.00

Will be procured as soon as possible

RT-931456E

Raptor ARC-18 90Å 5µm, 3.0 x 150mm, ea.

EUR 919.00

Will be procured as soon as possible

Product Number: RT-931456E
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 150 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Package Size: 1

Questions about the article To the product details

Price:

EUR 919.00

Will be procured as soon as possible

RT-9314575

Raptor ARC-18 90Å 5µm, 4.6 x 250mm, ea.

EUR 1,294.00

Will be procured as soon as possible

Product Number: RT-9314575
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 5.0 µm
Pore Size: 90 Å
Carbon Load: 5.0 %
Endcapping: no
Column Length: 250 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 100 m2/g
Bonding Type: monomeric
Package Size: 1

Questions about the article To the product details

Price:

EUR 1,294.00

Will be procured as soon as possible

RT-9314A0250

Raptor ARC-18 90Å 2.7µm, 4.6 x 5mm Guard Cartridge (EXP), pk.3

EUR 698.00

Will be procured as soon as possible

Product Number: RT-9314A0250
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 2.7 µm
Pore Volume: 0.30 mL/g
Pore Size: 90 Å
Carbon Load: 7.0 %
Endcapping: no
Column Length: 5 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Guard Cartridge
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 130 m2/g
Bonding Type: monomeric
Accessories: Guard Cartridge
Package Size: 3

Questions about the article To the product details

Price:

EUR 698.00

Will be procured as soon as possible

RT-9314A0252

Raptor ARC-18 90Å 2.7µm, 2.1 x 5mm Guard Cartridge (EXP), pk.3

EUR 698.00

Will be procured as soon as possible

Product Number: RT-9314A0252
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 2.7 µm
Pore Volume: 0.30 mL/g
Pore Size: 90 Å
Carbon Load: 7.0 %
Endcapping: no
Column Length: 5 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Guard Cartridge
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 130 m2/g
Bonding Type: monomeric
Accessories: Guard Cartridge
Package Size: 3

Questions about the article To the product details

Price:

EUR 698.00

Will be procured as soon as possible

RT-9314A0253

Raptor ARC-18 90Å 2.7µm, 3.0 x 5mm Guard Cartridge (EXP), pk.3

EUR 698.00

Will be procured as soon as possible

Product Number: RT-9314A0253
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 2.7 µm
Pore Volume: 0.30 mL/g
Pore Size: 90 Å
Carbon Load: 7.0 %
Endcapping: no
Column Length: 5 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Guard Cartridge
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 130 m2/g
Bonding Type: monomeric
Accessories: Guard Cartridge
Package Size: 3

Questions about the article To the product details

Price:

EUR 698.00

Will be procured as soon as possible

RT-9314A12

Raptor ARC-18 90Å 2.7µm, 2.1 x 100mm, ea.

EUR 993.00

Will be procured as soon as possible

Product Number: RT-9314A12
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 2.7 µm
Pore Volume: 0.30 mL/g
Pore Size: 90 Å
Carbon Load: 7.0 %
Endcapping: no
Column Length: 100 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 130 m2/g
Bonding Type: monomeric
Package Size: 1

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Price:

EUR 993.00

Will be procured as soon as possible

RT-9314A15

Raptor ARC-18 90Å 2.7µm, 4.6 x 100mm, ea.

EUR 993.00

Will be procured as soon as possible

Product Number: RT-9314A15
Manufacturer: Restek
Brand: Raptor
Selectivity: C18
Selectivity Manufacturer: ARC-18
Particle Size: 2.7 µm
Pore Volume: 0.30 mL/g
Pore Size: 90 Å
Carbon Load: 7.0 %
Endcapping: no
Column Length: 100 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 80 °C
pH Range: 1-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Core-Shell
Surface Area: 130 m2/g
Bonding Type: monomeric
Package Size: 1

Questions about the article To the product details

Price:

EUR 993.00

Will be procured as soon as possible

Ideal Applications

The Raptor ARC-18 stationary phase is an excellent general-purpose reversed-phase column for laboratories requiring robust and reproducible separations across a diverse range of analytes.

Typical applications include:

Pharmaceutical active ingredients (APIs)
Pharmaceutical impurities and degradation products
Stability-indicating methods
Quality control testing
Drug metabolites
Veterinary drug residues
Food contaminants
Mycotoxins
Pesticides and herbicides
Environmental pollutants
Clinical and bioanalytical samples
Forensic toxicology
Natural products
Industrial chemical analysis

Its balanced C18 selectivity makes the Raptor ARC-18 particularly effective for multi-residue methods, where reliable retention and reproducibility are essential across compounds with varying chemical properties.

Technical Specifications

Specification	Description
Stationary Phase	Proprietary ARC-18 bonded phase
Particle Technology	Superficially Porous (Core-Shell) Silica
Particle Size	2.7 µm
Pore Size	90 Å
USP Classification	L1
Carbon Load	Optimized for balanced reversed-phase retention and reproducibility
Separation Mechanism	Hydrophobic (reversed-phase) interactions
Surface Chemistry	High-purity, fully endcapped C18 bonded silica
Recommended pH Range	2.0–8.0
Maximum Operating Pressure	Compatible with HPLC and UHPLC systems (instrument dependent)
Mobile Phase Compatibility	Water, methanol, acetonitrile, phosphate buffers, ammonium formate, ammonium acetate, formic acid, and other LC-MS compatible mobile phases
LC-MS Compatibility	Excellent with volatile mobile phases
Available Column Dimensions	Multiple analytical and UHPLC formats available

Why Choose the Raptor™ ARC-18 90 Å?

The Restek Raptor ARC-18 90 Å offers a highly reliable reversed-phase solution for laboratories seeking consistent chromatographic performance across a broad range of applications. Its optimized ARC-18 chemistry provides excellent reproducibility while maintaining balanced retention for compounds with diverse physicochemical properties.

Combined with Restek's advanced core-shell particle technology, the Raptor ARC-18 delivers shorter run times, higher efficiency, and excellent peak shapes without requiring UHPLC-exclusive instrumentation. The result is simplified method development, reliable method transfer, and robust routine performance.

Whether used in pharmaceutical development, food safety laboratories, environmental testing, clinical research, or quality control, the Raptor ARC-18 90 Å provides the versatility and reliability demanded by modern analytical laboratories.

Available Column Dimensions

The Restek Raptor ARC-18 90 Å HPLC series is available in multiple configurations to accommodate a wide range of analytical workflows.

Particle Size: 2.7 µm
Pore Size: 90 Å
Internal Diameters: 2.1 mm, 3.0 mm, and 4.6 mm
Column Lengths: 30 mm, 50 mm, 100 mm, and 150 mm

These dimensions allow straightforward scaling between conventional HPLC and UHPLC methods while maintaining chromatographic performance, sensitivity, and robustness.

Restek Raptor™ ARC-18 90 Å HPLC Columns

Robust Reversed-Phase Performance for Acidic, Basic, and Neutral Compounds

Key Benefits

Filter products

Ideal Applications

Technical Specifications

Why Choose the Raptor™ ARC-18 90 Å?

Available Column Dimensions