Home :: HPLC Columns :: Nacalai Tesque (COSMOSIL, COSMOSCORE, COSMOGEL) :: COSMOSIL Series (Silica based) :: COSMOSIL PYE 120Å (Pyrenylethyl group with strongest n-n Interaction) :: COSMOSIL 5PYE 120Å 5µm, 4.6 x 10mm Guard Column, ea.