The Agilent 1.8 um pH method development kit includes 727700-902 ZORBAX RRHT Extend-C18, 2.1 x 50 mm, 1.8 um, 600 bar, 827700-902 ZORBAX RRHT StableBond C18, 2.1 x 50 mm, 1.8 um, 600 bar, 959741-902 ZORBAX RRHT Eclipse Plus C18, 2.1 x 50 mm, 1.8 um, 600 bar. It measures 2.1 mm ID x 50 mm L and...