Milligram-to-gram level sample mass throughput per injection; up to 15 g depending on column size and loading capacity   • Composition gradient with high-pressure mixing: 333-334 binary system (third pump for ternary). Solvent selection on each pump with addition of four-solvent valve (up to eight solvents)   • Ability to operate additional pumps in parallel to double the flow rate up to 400 mL/min   • Control from 333 master pump: flow-rate gradient, four-solvent selection and step gradient (additional valve), composition gradient (one or two additional pumps), sample-injection pump, UV/VIS detector and electrical input/output contacts with any other associated equipment   • Quiet operation, durable design   • Control 33X Pumps and an entire preparative HPLC system via TRILUTION® LC System Software   • Stackable to conserve bench space