Varian Inc. (Part A) - ProStar 220/230/240 Ternary Solvent Delivery Module

Choose the 220 (Isocratic), 230 (Ternary) or 240 (Quaternary) best suited to your laboratory's needs. All of these models feature a patented pump design that offers unequaled reliability and ease of use.

Cost-Effective

• Time and money saved -- Neither vacuum degassing nor helium sparging are needed.
• Pump cavitation eliminated -- Patented pump design features exclusive mechanical inlet valve, rapid fill stroke, and high pressure mixing.
• Over 99% uptime achieved - Maintenance or repair rarely needed. Pump stroke counter allows scheduling of routine maintenance.
• Extremely easy routine maintenance -- With multilevel diagnostics and accessible components, pumps can be overhauled in less than 30 minutes.

Peak Performance

• Gradient pumps offer selectable one-, two-, or four-stroke proportioning is available to optimize gradient precision on long, shallow gradients while minimizing gradient delay volume on steep, fast gradients.
• Reliable results -- Intelligent design, including electronic flow and in-line, high-speed proportioning valves, assures accurate and reproducible results.
• GLP compliance -- Run-and-error logs maintain a complete audit trail of operating parameters, set points, errors, and faults.
• Built-in automations -- Up to five methods can be built and stored at the pump. Choose the appropriate method with a single keystroke.