Meet your quantitative needs with triple quadrupole performance which gives superior sensitivity, renowned performance reliability, and easy upgradeability. The Agilent 6400 Series Triple Quadrupole LC/MS Systems are the proven choice for your quantitative applications in pharmaceutical ADME/DMPK studies, biomarker validation, clinical research, food safety, forensics, toxicology, and environmental analyses. Choose an Agilent 6420, 6430, 6460, or 6490 Triple Quadrupole LC/MS System for unmatched productivity, performance, and value for all your quantitative analysis needs. The 6420 is economical and easy to use a perfect workhorse instrument for laboratories requiring standard quantitative capabilities. The 6430 offers improved sensitivity to yield more precise quantitation for most routine assays. The 6460 adds Agilent Jet Stream (AJS) technology to dramatically increase sensitivity for a wide range of challenging quantitative applications. The 6490 includes novel iFunnel technology for ultra-trace analysis with attogram limits of quantitation and an unprecedented six orders of linearity for your most demanding quantitative analyses.