600 bar; superficially porous, 2.7 µm particle6; available in 2.1 - 4.6 mm id;  30 - 150 mm lengths. Agilent's Poroshell 120 columns have a solid 1.7 µm core and a porous .5 µm outer layer, for a total 2.7 µm particle that delivers high resolution and high speed separations with up to 50% less backpressure than sub-2 µm column. Stable to 600 bar, use Poroshell 120 to push every HPLC and UHPLC analysis further.