Advanced Chromatography Technologies Ltd have published a new HPLC and UHPLC Columns Catalogue. The new catalogue contains details of the full ACE and ACE Excel column ranges, which offer full scalability from 2µm UHPLC columns, through to 3, 5, 10 and 15µm HPLC columns. Ten selectivities are available, including the uniquely engineered ACE C18-AR and ACE C18-PFP ‘Extra Resolving Power’ phases. These two unique phases offer multiple mechanisms of separation and have been specifically developed to provide alternative selectivity to C18 phases but still provide ‘C18’ column stability and robustness. ACE columns are also available with C18, C8, C4, CN, AQ, Phenyl, C18-HL and Silica phases. Columns are available in lengths of 20mm to 300mm and i.d.s from 75µm to 30.0mm. Additionally, 5 different ultra inert 300Å phases are available for peptide and small protein separations.