Phenomenex HPLC Guard Cartridges SecurityGuard, Gemini-NX C18 4 x 2.0mm ID, 10 pc/PAK

The most rugged and highly efficient Gemini C18 HPLC column phase for reversed phase. Gemini NX-C18 takes LC/MS separations to the next level and offers: Control selectivity of ionizable compounds for optimized methods Consistent performance in both volatile and non-volatile buffers High and low pH methods