Welch HPLC Column Series

Welch

Welch Materials offers a broad portfolio of high-performance liquid chromatography (HPLC) columns designed to serve diverse analytical needs, from routine reversed-phase separations to specialty applications like HILIC. Their product lines are well-recognized for their reproducibility, high purity of stationary phase materials, and the breadth of chromatographic phases and formats available.

The Ultisil brand is built on ultra-pure full porous spherical silica with high surface uniformity and low metal contamination, allowing for high-resolution separations and long column life. These columns cover a wide variety of stationary phase chemistries (e.g., C18, C8, HILIC, Amino, etc) and particle sizes.

Xtimate is another of Welch’s branded column lines, offering additional phase and format options, including smaller particle sizes and UHPLC-compatible dimensions.

The Welchrom brand is specifically called out by Welch Materials as a line of HPLC columns that emphasise high-purity spherical silica, advanced bonding and end-capping techniques to deliver symmetrical peak shapes and low back‐pressure.

In addition to the three brands above, Welch also markets other series such as Topsil, Boltimate® (core-shell particle technology) and more, to address specialised needs in chromatography.

4143 Products

Product Number	Description	Price	Specifications

WL-0001-01036 Advanchrom HIC-Butyl 1000Å 3μm, 4.6 x 35mm, ea. Price on request

Welch Materials Advanchrom HIC-Butyl (C4) 1000Å 3μm, 4.6 x 35mm Analytical Column, ea.

Product Number: WL-0001-01036
Manufacturer: Welch Materials
Brand: Advanchrom
Selectivity: C4
Selectivity Manufacturer: HIC-Butyl
Particle Size: 3.0 µm
Pore Size: 1‘000 Å
Column Length: 35 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Hydrophobic Interaction (HIC)
Temperature Range: 40(60) °C
pH Range: 2-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Package Size: 1

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WL-0001-01037 Advanchrom HIC-Butyl 1000Å 3μm, 4.6 x 50mm, ea. Price on request

Welch Materials Advanchrom HIC-Butyl (C4) 1000Å 3μm, 4.6 x 50mm Analytical Column, ea.

Product Number: WL-0001-01037
Manufacturer: Welch Materials
Brand: Advanchrom
Selectivity: C4
Selectivity Manufacturer: HIC-Butyl
Particle Size: 3.0 µm
Pore Size: 1‘000 Å
Column Length: 50 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Hydrophobic Interaction (HIC)
Temperature Range: 40(60) °C
pH Range: 2-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Package Size: 1

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WL-0002-02009 AdvanChrom C18 180Å 5µm, 2.1 x 30mm, ea. Price on request

Product Number: WL-0002-02009
Manufacturer: Welch Materials
Brand: Advanchrom
Selectivity: C18
Particle Size: 5.0 µm
Pore Size: 180 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 220 m2/g
Package Size: 1

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WL-0002-02038 AdvanChrom C18 180Å 5µm, 4.6 x 75mm, ea. Price on request

Product Number: WL-0002-02038
Manufacturer: Welch Materials
Brand: Advanchrom
Selectivity: C18
Particle Size: 5.0 µm
Pore Size: 180 Å
Carbon Load: 14 %
Endcapping: yes
Column Length: 75 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 40(60) °C
pH Range: 1-12.5
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 220 m2/g
Package Size: 1

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WL-0002-02041 AdvanChrom C18 180Å 5µm, 4.6 x 150mm, ea. Price on request

Product Number: WL-0002-02041
Manufacturer: Welch Materials
Brand: Advanchrom
Selectivity: C18
Particle Size: 5.0 µm
Pore Size: 180 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 220 m2/g
Package Size: 1

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WL-0002-02043 AdvanChrom C18 180Å 5µm, 4.6 x 250mm, ea. Price on request

Product Number: WL-0002-02043
Manufacturer: Welch Materials
Brand: Advanchrom
Selectivity: C18
Particle Size: 5.0 µm
Pore Size: 180 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 220 m2/g
Package Size: 1

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WL-0004-05039 AdvanChrom Bio HIC-Butyl 1000Å 5µm, 4.6 x 100mm, ea. Price on request

Product Number: WL-0004-05039
Manufacturer: Welch Materials
Brand: Advanchrom
Selectivity: C4
Selectivity Manufacturer: HIC-Butyl
Particle Size: 5.0 µm
Pore Size: 1‘000 Å
Column Length: 100 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: HIC
Temperature Range: 40(60) °C
pH Range: 2-8
Particle: Silica
Particle Shape: Spherical
Particle Type: Fully Porous
Package Size: 1

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WL-00101-01009 Xtimate C18 120Å 1.8µm, 2.1 x 30mm, ea. Price on request

Product Number: WL-00101-01009
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01010 Xtimate C18 120Å 1.8µm, 2.1 x 50mm, ea. Price on request

Product Number: WL-00101-01010
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01011 Xtimate C18 120Å 1.8µm, 2.1 x 75mm, ea. Price on request

Product Number: WL-00101-01011
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
Column Length: 75 mm
Column ID: 2.1 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01012 Xtimate C18 120Å 1.8µm, 2.1 x 100mm, ea. Price on request

Product Number: WL-00101-01012
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01014 Xtimate C18 120Å 1.8µm, 2.1 x 150mm, ea. Price on request

Product Number: WL-00101-01014
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01018 Xtimate C18 120Å 1.8µm, 3.0 x 30mm, ea. Price on request

Product Number: WL-00101-01018
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01019 Xtimate C18 120Å 1.8µm, 3.0 x 50mm, ea. Price on request

Product Number: WL-00101-01019
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01021 Xtimate C18 120Å 1.8µm, 3.0 x 100mm, ea. Price on request

Product Number: WL-00101-01021
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01023 Xtimate C18 120Å 1.8µm, 3.0 x 150mm, ea. Price on request

Product Number: WL-00101-01023
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01036 Xtimate C18 120Å 1.8µm, 4.6 x 30mm, ea. Price on request

Product Number: WL-00101-01036
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
Column Length: 30 mm
Column ID: 4.6 mm
Hardware Material: Stainless Steel
Hardware Type: Analytical Column
Application: Reversed Phase
USP Code: L1
Temperature Range: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01037 Xtimate C18 120Å 1.8µm, 4.6 x 50mm, ea. Price on request

Product Number: WL-00101-01037
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01039 Xtimate C18 120Å 1.8µm, 4.6 x 100mm, ea. Price on request

Product Number: WL-00101-01039
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01041 Xtimate C18 120Å 1.8µm, 4.6 x 150mm, ea. Price on request

Product Number: WL-00101-01041
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01210 Xtimate C18 120Å 1.8µm, 2.1 x 50mm, ea. Price on request

Product Number: WL-00101-01210
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01212 Xtimate C18 120Å 1.8µm, 2.1 x 100mm, ea. Price on request

Product Number: WL-00101-01212
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-01214 Xtimate UHPLC C18 120Å 1.8µm, 2.1 x 150mm (W-Port), ea. Price on request

Product Number: WL-00101-01214
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 1.8 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-11009 Xtimate C18 120Å 3µm, 2.1 x 30mm, ea. Price on request

Product Number: WL-00101-11009
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 3.0 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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WL-00101-11010 Xtimate C18 120Å 3µm, 2.1 x 50mm, ea. Price on request

Product Number: WL-00101-11010
Manufacturer: Welch Materials
Brand: Xtimate
Selectivity: C18
Particle Size: 3.0 µm
Pore Size: 120 Å
Carbon Load: 14 %
Endcapping: yes
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: 40(60) °C
pH Range: 1-12.5
Particle: Silica-Polymer Hybrid
Particle Shape: Spherical
Particle Type: Fully Porous
Surface Area: 320 m2/g
Bonding Type: monomeric
Pore Volume: 1.00 ml/g
Package Size: 1

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