Bond Elut C18 EWP uses a special silica with wide pores. This is endcapped.

• No exclusion of large molecules
• Good for desalting proteins
• Successful separation of proteins, peptides or nucleotides

This is based upon standard particles size silica but with 500 Å pores to allow more efficient extraction of large molecules (>15000 MW), which are typically excluded from standard porosity silica phases.