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.

P/N: 00410-01054

$680.00 USD

Topsil C18 offers distinct selectivity compared to other C18 columns from Welch Materials. With lower column pressure and higher efficiency, it is an economical HPLC column choice.

P/N: 00410-01045

$630.00 USD

Topsil C18 offers distinct selectivity compared to other C18 columns from Welch Materials. With lower column pressure and higher efficiency, it is an economical HPLC column choice.

P/N: 00410-01046

$680.00 USD

Topsil C18 offers distinct selectivity compared to other C18 columns from Welch Materials. With lower column pressure and higher efficiency, it is an economical HPLC column choice.