Restek Ultra HPLC Column Series | for routine and advanced HPLC applications

Restek Ultra Series

Restek Ultra HPLC Columns – Reliable Performance for High-Resolution Liquid Chromatography

The Restek Ultra HPLC column series is designed to deliver outstanding chromatographic performance, exceptional reproducibility, and long column lifetime for routine and advanced HPLC applications. Manufactured using high-purity spherical silica particles and tightly controlled bonding technologies, Ultra HPLC columns provide consistent retention, excellent peak symmetry, and robust method reproducibility across a wide range of analytical workflows.

The Ultra HPLC portfolio is based on high-purity, fully porous spherical silica particles with 3 µm and 5 µm particle size, 100 Å pore size, and a surface area of approximately 320 m²/g. The silica substrate features excellent mechanical stability and low metal content, ensuring reliable performance for acidic, basic, and neutral analytes. Comprehensive quality control minimizes batch-to-batch variation, making Ultra columns an excellent choice for method development, validation, and routine quality control.

Ultra Aqueous C18 100Å Series

Ultra Aromax 100Å Series

Ultra Biphenyl 100Å Series

Ultra Carbamate 100Å Series

Ultra IBD 100Å Series

729 Products

Product Number	Description	Price	Specifications

RT-9100312

Ultra Silica 100Å 3µm, 2.1 x 100mm, ea.

EUR 708.00

Will be procured as soon as possible

Product Number: RT-9100312
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 100 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 708.00

Will be procured as soon as possible

RT-9100312-700

Ultra Silica 100Å 3µm, 2.1 x 100mm (Trident), ea.

EUR 744.00

Will be procured as soon as possible

Product Number: RT-9100312-700
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 100 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

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Price:

EUR 744.00

Will be procured as soon as possible

RT-9100315

Ultra Silica 100Å 3µm, 4.6 x 100mm, ea.

EUR 708.00

Will be procured as soon as possible

Product Number: RT-9100315
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 100 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 708.00

Will be procured as soon as possible

RT-9100315-700

Ultra Silica 100Å 3µm, 4.6 x 100mm (Trident), ea.

EUR 744.00

Will be procured as soon as possible

Product Number: RT-9100315-700
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 100 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 744.00

Will be procured as soon as possible

RT-910031E

Ultra Silica 100Å 3µm, 3.0 x 100mm, ea.

EUR 708.00

Will be procured as soon as possible

Product Number: RT-910031E
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 100 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 708.00

Will be procured as soon as possible

RT-9100332 Ultra Silica 100Å 3µm, 2.1 x 30mm, ea. Price on request

Product Number: RT-9100332
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 30 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

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RT-9100332-700 Ultra Silica 100Å 3µm, 2.1 x 30mm (Trident), ea. Price on request

Product Number: RT-9100332-700
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 30 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

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RT-9100335

Ultra Silica 100Å 3µm, 4.6 x 30mm, ea.

EUR 666.00

Will be procured as soon as possible

Product Number: RT-9100335
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 30 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 666.00

Will be procured as soon as possible

RT-9100335-700 Ultra Silica 100Å 3µm, 4.6 x 30mm (Trident), ea. Price on request

Product Number: RT-9100335-700
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 30 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

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RT-910033E

Ultra Silica 100Å 3µm, 3.0 x 30mm, ea.

EUR 666.00

Will be procured as soon as possible

Product Number: RT-910033E
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 30 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 666.00

Will be procured as soon as possible

RT-9100352

Ultra Silica 100Å 3µm, 2.1 x 50mm, ea.

EUR 666.00

Will be procured as soon as possible

Product Number: RT-9100352
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 50 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 666.00

Will be procured as soon as possible

RT-9100352-700

Ultra Silica 100Å 3µm, 2.1 x 50mm (Trident), ea.

EUR 700.00

Will be procured as soon as possible

Product Number: RT-9100352-700
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 50 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 700.00

Will be procured as soon as possible

RT-9100355

Ultra Silica 100Å 3µm, 4.6 x 50mm, ea.

EUR 666.00

Will be procured as soon as possible

Product Number: RT-9100355
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 50 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 666.00

Will be procured as soon as possible

RT-9100355-700 Ultra Silica 100Å 3µm, 4.6 x 50mm (Trident), ea. Price on request

Product Number: RT-9100355-700
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 50 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

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RT-910035E

Ultra Silica 100Å 3µm, 3.0 x 50mm, ea.

EUR 666.00

Will be procured as soon as possible

Product Number: RT-910035E
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 50 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 666.00

Will be procured as soon as possible

RT-9100362

Ultra Silica 100Å 3µm, 2.1 x 150mm, ea.

EUR 766.00

Will be procured as soon as possible

Product Number: RT-9100362
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 150 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 766.00

Will be procured as soon as possible

RT-9100362-700 Ultra Silica 100Å 3µm, 2.1 x 150mm (Trident), ea. Price on request

Product Number: RT-9100362-700
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 150 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

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RT-9100365

Ultra Silica 100Å 3µm, 4.6 x 150mm, ea.

EUR 766.00

Will be procured as soon as possible

Product Number: RT-9100365
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 150 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 766.00

Will be procured as soon as possible

RT-9100365-700

Ultra Silica 100Å 3µm, 4.6 x 150mm (Trident), ea.

EUR 799.00

Will be procured as soon as possible

Product Number: RT-9100365-700
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 150 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 799.00

Will be procured as soon as possible

RT-910036E

Ultra Silica 100Å 3µm, 3.0 x 150mm, ea.

EUR 766.00

Available

Product Number: RT-910036E
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 3.0 µm
Pore Volume: 0.86 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 150 mm
Column ID: 3.0 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 766.00

Available

RT-91005

Ultra Silica 100Å 5µm, Bulk Material, 10g, ea.

EUR 1,029.00

Will be procured as soon as possible

Product Number: RT-91005
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 5.0 µm
Pore Volume: 0.88 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Hardware Type: Bulk Material
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 1,029.00

Will be procured as soon as possible

RT-910050210

Ultra Silica 100Å 5µm, 4.0 x 10mm Guard Cartridge (Trident), pk.3

EUR 266.00

Will be procured as soon as possible

Product Number: RT-910050210
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 5.0 µm
Pore Volume: 0.88 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 10 mm
Column ID: 4.0 mm
Hardware Material: Stainless Steel
Hardware Type: Guard Cartridge
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Accessories: Guard Cartridge
Package Size: 3

Questions about the article To the product details

Price:

EUR 266.00

Will be procured as soon as possible

RT-910050212

Ultra Silica 100Å 5µm, 2.1 x 10mm Guard Cartridge (Trident), pk.3

EUR 266.00

Will be procured as soon as possible

Product Number: RT-910050212
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 5.0 µm
Pore Volume: 0.88 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 10 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Guard Cartridge
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Accessories: Guard Cartridge
Package Size: 3

Questions about the article To the product details

Price:

EUR 266.00

Will be procured as soon as possible

RT-9100512

Ultra Silica 100Å 5µm, 2.1 x 100mm, ea.

EUR 666.00

Will be procured as soon as possible

Product Number: RT-9100512
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 5.0 µm
Pore Volume: 0.88 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 100 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

Price:

EUR 666.00

Will be procured as soon as possible

RT-9100512-700 Ultra Silica 100Å 5µm, 2.1 x 100mm (Trident), ea. Price on request

Product Number: RT-9100512-700
Manufacturer: Restek
Brand: Ultra
Selectivity: Silica
Particle Size: 5.0 µm
Pore Volume: 0.88 mL/g
Pore Size: 100 Å
Carbon Load: n.a.
Endcapping: n.a.
Column Length: 100 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Normal Phase
USP Code: L3
Temperature Range: 80 °C
pH Range: 2.5-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 300 m2/g
Bonding Type: n.a.
Package Size: 1

Questions about the article To the product details

To meet diverse separation requirements, the Restek Ultra series is available in several complementary stationary phases, including:

Ultra C18 – A versatile octadecyl phase for general reversed-phase applications with excellent hydrophobic retention.
Ultra Aqueous C18 – Designed for improved retention of highly polar compounds while maintaining stability under 100% aqueous mobile phase conditions.
Ultra Biphenyl – Provides enhanced selectivity through π-π interactions and is particularly well suited for aromatic compounds, pharmaceuticals, and structurally related analytes.
Ultra Phenyl – Offers unique aromatic selectivity and alternative retention mechanisms compared to traditional alkyl phases.
Ultra C8 – A lower hydrophobicity phase ideal for faster analyses and moderately retained compounds.
Ultra Cyano (CN) – Suitable for both reversed-phase and normal-phase applications, providing unique selectivity for polar analytes.

Restek Ultra HPLC columns are available in a broad range of column dimensions to accommodate both analytical and method development requirements. Their robust silica chemistry and optimized bonding processes ensure excellent resistance to column bleed, high efficiency, and reliable performance over extended use.

Whether you are performing pharmaceutical quality control, environmental testing, food safety analysis, forensic investigations, or academic research, Restek Ultra HPLC columns provide the selectivity, reproducibility, and durability required for high-quality.

Restek Ultra HPLC Columns – Reliable Performance for High-Resolution Liquid Chromatography

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