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Q-Grad: Quaternary High Pressure Gradient HPLC Pump

Q-Grad Quaternary High Pressure Gradient Pump

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:

1. Stand-alone keypad (System Control Unit SCU-460)
2. 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

Specifications
Flow Rates:	0.1 - 5.0ml/min (each pump head)
Flow Accuracy:	±2%
Flow Precision:	0.2% RSD
Pressure:	0 - 6000psi (stainless steel) 0 - 5000psi (PEEK)
Pressure Accuracy:	±1% of full scale pressure
Pulsation:	±1% at 1ml/min and 1000psi
Physical Characteristics
Dimensions (W x H x D):	264 x 190 x 445mm
Mass:	16kg
Power:	110-220V AC, 50/60Hz

Additional Information

Q-Grad Pump Datasheet (127KB)

Pricing

Description	Part No	Qty	List Price
Q-Grad quaternary high-pressure gradient pump, 5ml heads, w/pulse damper & transducer, PEEK, no control. Control must be ordered separately.	Q05PFD01	Each	£7519.00
Q-Grad quaternary high-pressure gradient pump, 5ml heads, w/pulse damper & transducer, SS, no control. Control must be ordered separately.	Q05SFD01	Each	£7519.00