Topsil Columns

Topsil is Welch’s Next Generation Silica, with larger pore size and greater surface area, distinguishing Topsil stationary phases from those in our Ultisil Series.

High purity silica (99.99%) with 150Å pore size and 250m2/g surface area.
Good for small molecules and peptides.
Lower back pressure than Ultisil.

Topsil CN, Cartridge 5µm, 150Å, 2.1×10mm

$28.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

Topsil CN, Cartridge 5µm, 150Å, 4.6×10mm

$31.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

Topsil NH2, Cartridge 3µm, 150Å, 2.1×10mm

$48.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

Topsil NH2, Cartridge 5µm, 150Å, 2.1×10mm

$28.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

Topsil NH2, Cartridge 3µm, 150Å, 4.6×10mm

$50.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

Topsil NH2, Cartridge 5µm, 150Å, 4.6×10mm

$31.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

Topsil Silica, Cartridge 5µm, 150Å, 2.1×10mm

$28.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

Topsil Silica, Cartridge 5µm, 150Å, 4.6×10mm

$31.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

Topsil Phenyl-Hexyl, Semi-Prep Cartridge: 5µm, 150Å, 10×10mm

$169.00 USD

Welch preparative guard column cartridges uses the same packing as the preparative column, which can intercept some of the same polar substances in the sample and prevent them from contaminating an...

Topsil Phenyl-Hexyl, Prep Cartridge: 5µm, 150Å, 30×10mm

$452.00 USD

$3,226.00 USD

Welch preparative column uses the same packing materials as does analytical column, to ensure the best reproducibility of analysis and preparative scale. Special packing technique and stainless mod...

$2,822.00 USD

$1,935.00 USD

$480.00 USD

Topsil series HPLC column is a next-generation column introduced by Welch, besides Ultisil, Xtimate and Welchrom, this series use different silica and provide different selectivity.

$500.00 USD

Topsil series HPLC column is a next-generation column introduced by Welch, besides Ultisil, Xtimate and Welchrom, this series use different silica and provide different selectivity.

Topsil HILIC NH2, Cartridge 3µm, 150Å, 2.1×10mm

$48.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

Topsil HILIC NH2, Cartridge 5µm, 150Å, 2.1×10mm

$28.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

Topsil HILIC NH2, Cartridge 3µm, 150Å, 4.6×10mm

$50.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

Topsil HILIC NH2, Cartridge 5µm, 150Å, 4.6×10mm

$31.00 USD

Welch guard cartridges uses the same packing materials as does analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use 2.1×10mm cartridge, whil...

$470.00 USD

Topsil series HPLC column is a next-generation column introduced by Welch, besides Ultisil, Xtimate and Welchrom, this series use different silica and provide different selectivity.

$400.00 USD

Topsil series HPLC column is a next-generation column introduced by Welch, besides Ultisil, Xtimate and Welchrom, this series use different silica and provide different selectivity.

$400.00 USD

Topsil series HPLC column is a next-generation column introduced by Welch, besides Ultisil, Xtimate and Welchrom, this series use different silica and provide different selectivity.