The Ultra line represents Restek’s broadest selection of
stationary phases on a single silica support.
Made of high-purity, type-B silica that minimizes activity
and creates high-density bonding, these columns are designed for selective and
reliable HPLC applications.
Our C8 is a conventional monomeric octyl silane column
offering a shorter alkyl chain to provide less hydrophobic retention and
improved basic peak shape over a traditional C18 phase. Like our C18, this
general-purpose Restek® C8 is suitable for a wide range of compounds from
acidic through slightly basic.