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Topsil Columns

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.
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Phase Show all Phase
USP Classification Show all USP Classification
Partical Size Show all Partical Size
Column ID Show all Column ID
Column Length Show all Column Length
Pore Size Show all Pore Size
Surface Area Show all Surface Area
pH Range Show all pH Range
Topsil Phenyl-Hexyl, 5μm, 4.6×200mm
$470.00 USD
$470.00 USD
Topsil Phenyl-Hexyl offers distinct selectivity compared to other phenyl columns from Welch Materials. It offers exceptional selectivity for compounds containing phenyl groups and short-chain alkyl...
Topsil Phenyl-Hexyl, 5μm, 4.6×250mm
$470.00 USD
$470.00 USD
Topsil Phenyl-Hexyl offers distinct selectivity compared to other phenyl columns from Welch Materials. It offers exceptional selectivity for compounds containing phenyl groups and short-chain alkyl...
Topsil CN, 5μm, 4.6×150mm
$400.00 USD
$400.00 USD
Topsil CN offers distinct selectivity compared to other cyano columns from Welch Materials. With lower column pressure and higher efficiency, it is an economical HPLC column choice.
Topsil CN, 5μm, 4.6×250mm
$420.00 USD
$420.00 USD
Topsil CN offers distinct selectivity compared to other cyano columns from Welch Materials. With lower column pressure and higher efficiency, it is an economical HPLC column choice.
Topsil NH2, 3μm, 4.6×150mm
$450.00 USD
$450.00 USD
Topsil NH2 offers distinct selectivity compared to other amino columns from Welch Materials. It is suitable for monosaccharide separation under reversed-phase conditions and polar compound separati...
Topsil NH2, 3μm, 4.6×250mm
$470.00 USD
$470.00 USD
Topsil NH2 offers distinct selectivity compared to other amino columns from Welch Materials. It is suitable for monosaccharide separation under reversed-phase conditions and polar compound separati...
Topsil NH2, 5μm, 4.6×150mm
$400.00 USD
$400.00 USD
Topsil NH2 offers distinct selectivity compared to other amino columns from Welch Materials. It is suitable for monosaccharide separation under reversed-phase conditions and polar compound separati...
Topsil NH2, 5μm, 4.6×250mm
$420.00 USD
$420.00 USD
Topsil NH2 offers distinct selectivity compared to other amino columns from Welch Materials. It is suitable for monosaccharide separation under reversed-phase conditions and polar compound separati...
Topsil NH2, 5μm, 4.0×300mm
$430.00 USD
$430.00 USD
Topsil NH2 offers distinct selectivity compared to other amino columns from Welch Materials. It is suitable for monosaccharide separation under reversed-phase conditions and polar compound separati...
Topsil Silica, 5μm, 2.1×150mm
$460.00 USD
$460.00 USD
Topsil Silica is suitable for the separation of highly polar compounds and lipophilic compounds, offering distinct selectivity compared to other silica columns from Welch Materials. With lower colu...
Topsil Silica, 5μm, 4.6×150mm
$400.00 USD
$400.00 USD
Topsil Silica is suitable for the separation of highly polar compounds and lipophilic compounds, offering distinct selectivity compared to other silica columns from Welch Materials. With lower colu...
Topsil Silica, 5μm, 4.6×250mm
$420.00 USD
$420.00 USD
Topsil Silica is suitable for the separation of highly polar compounds and lipophilic compounds, offering distinct selectivity compared to other silica columns from Welch Materials. With lower colu...
Topsil C18, Cartridge: 3µm, 150Å, 2.1×10mm, 2pcs
$96.00 USD
$96.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Topsil C18, Cartridge: 5µm, 150Å, 2.1×10mm, 2pcs
$56.00 USD
$56.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Topsil C18, Cartridge: 3µm, 150Å, 4.6×10mm, 2pcs
$100.00 USD
$100.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Topsil C18, Cartridge: 5µm, 150Å, 4.6×10mm, 2pcs
$62.00 USD
$62.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Topsil C8, Cartridge: 3µm, 150Å, 2.1×10mm, 2pcs
$96.00 USD
$96.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Topsil C8, Cartridge: 5µm, 150Å, 2.1×10mm, 2pcs
$56.00 USD
$56.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Topsil C8, Cartridge: 3µm, 150Å, 4.6×10mm, 2pcs
$100.00 USD
$100.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Topsil C8, Cartridge: 5µm, 150Å, 4.6×10mm, 2pcs
$62.00 USD
$62.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Topsil Phenyl-Hexyl, Cartridge: 3µm, 150Å, 2.1×10mm, 2pcs
$96.00 USD
$96.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Topsil Phenyl-Hexyl, Cartridge: 5µm, 150Å, 2.1×10mm, 2pcs
$56.00 USD
$56.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Topsil Phenyl-Hexyl, Cartridge: 3µm, 150Å, 4.6×10mm, 2pcs
$100.00 USD
$100.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Topsil Phenyl-Hexyl, Cartridge: 5µm, 150Å, 4.6×10mm, 2pcs
$62.00 USD
$62.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...