Q-Grad quaternary high-pressure gradient pump 0.01-5ml/min, 5000psi (PEEK), 6000psi (SS). Control separate

High Pressure Gradient at Low Pressure Cost

The Q-Grad Pump provides high-pressure quaternary gradients for HPLC applications. Four high-performance pumps are packaged into a single cabinet and are controlled with PC-based software. The result is high-pressure gradient capability that is as economical as low pressure mixing systems.

Reliability and Simplicity:

The Q-Grad Pump uses a very efficient pulse damper mixer to ensure high performance gradients. A prime-purge valve and upper and lower pressure limits are also standard. All Q-Grad pumps carry a 3-year warranty.

Integrates into Automated Systems:

External synchronization from an injector or autosampler may be enabled through the pump control option using standard TTL or contact closures.

Two Methods of Control are Available:

• Stand-alone keypad (System Control Unit SCU-460)
• EZStart system control and data acquisition software controls of the Q-Grad pump, detectors, and autosampler.

Both have Run/Stop inputs and real-time pressure monitoring with upper and lower pressure limits. Each option is designed to be user friendly – you choose the interface that fits your needs.

Unmatched Gradient Performance:

High pressure mixing of solvents eliminates the common problem of solvent outgassing, pre-pump mixing volume, and differing solvent compressibilities associated with low pressure mixing.

Standard Pump Features:

• Self Flushing Pump Heads
• Prime-Purge Valve
• Pulse Damper for Reduced Pulsation
• Stainless Steel or PEEK Fluid Path
• Motor Stall Detector
• Spring Loaded Check Valves

Standard Pump Controls:

• RS-232 Serial COM Port (each pump)
• Run/stop Input (each pump) - 5 volt TTL type
• Real Time Pressure Reading

Typical Pump Gradient Percent Range:

• 0-100% in 0.1% increments
• Percents B, C, D programmable
• Percent A automatically adjusted