Welch Materials HPLC Guard Column Cartridge Ultisil XB-C4, 3 μm, 120Å, 2.1 x 10 mm, 2 pc/PAK

suitable for separation of bio-samples Strong retention for hydrophobic and polar compounds Column packing of 300Å big pore size particles is appropriate for separation of peptide and protein samples with sharp peak shape Minibore column can be used for LC/MS(/MS)