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Home > Products > Chromatography > LC-4000 Series Components > Pumps
> PU-4180/4185/4185Binary/4285/4285Binary/4080i/4085i HPLC Pumps

PU-4180 HPLC Pump
PU-4185 Semi-micro HPLC Pump
PU-4185Binary Semi-micro HPLC Pump
PU-4285 UHPLC Pump
PU-4285Binary UHPLC Pump
PU-4080i Bio-inert HPLC Pump
PU-4085i Bio-inert HPLC Pump


The PU-4180 and 4185 pumps operate at pressures up to 70 MPa, designed mainly for use with RHPLC for core-shell columns or similar micro packing materials as well as working at pressures commonly used for conventional HPLC.

The PU-4285 UHPLC pump provides precise flow at pressures up to 130 MPa; for columns with particle sizes of less than 2 µm. The LC-4000 series UHPLC system can also be used for rapid analysis HPLC (RHPLC) and conventional HPLC.

PU-4080i and PU-4085i are manufactured by using polyetheretherketone (PEEK) instead of metal parts which may become exposed to fluids. This allows analyses without concern about sample decomposition or absorption caused by metal.

The PU-4180/85 and PU-4285 analytical pumps can be configured for both single pump gradient and multiple pump gradient operation.

The single pump quaternary gradient module offers excellent gradient formation for up to four solvents.

The newly designed 4-way solvent valve for switching the four solvents is synchronized to the operation of the pump motor control - variable cycle adaption optimizes delivery according to gradient resolution and flow rate.

This highly efficient quaternary gradient mode can be applied to a wide flow-rate range from low to high flow rates.

Two and three pump binary or ternary gradient modules with optional built-in degasser are available for fast cycle high-resolution gradient formation; the response time is superior to the single pump quaternary gradient system.


Specifications

PU-4180
Flow rate range 0.5 to 10 mL/min
Maximum pressure 70 MPa (- 6.0mL/min) / 35 MPa (- 10 mL/min)
PU-4185/4185Binary
Flow rate range 0.05 to 4 mL/min
Maximum pressure 70 MPa (- 3.0mL/min) / 40 MPa (- 4 mL/min)
PU-4285/4285Binary
Flow rate range 0.05 to 2 mL/min
Maximum pressure 130 MPa (- 1.5 mL/min) / 40 MPa (- 2 mL/min)
PU-4080i
Flow rate range 0.5 to 10 mL/min
Maximum pressure 25 MPa
PU-4085i
Flow rate range 0.05 to 4 mL/min
Maximum pressure 25 MPa (- 2 mL/min)



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