Pump features

The system uses a low-pressure mixing pump.

The Alliance iS Quaternary Solvent Manager (QSM) can blend up to four degassed solvents (A, B, C, and D). A gradient proportioning valve (GPV) is used to dynamically blend solvents in any specified combination, producing repeatable and reproducible gradient segments regardless of solvent compressibility and system back pressure. Integrated degasser chambers (one per solvent line) automatically remove dissolved gases from up to four elution solvents.

The pump features:

• Automated, continuous compressibility compensation for accurate and precise delivery at pressures up to 12,000 psi
• Leak sensors to identify and manage solvent leaks during unattended operation
• Programmable flow rates that range from 0.001 to 10.000 mL/min, in 0.001-mL increments

Contents

• Pressure flow envelope