LU Class

The analytical LU Class consists of dual-headed, positive displacement piston pumps, delivering accurate flow rates at extremely high pressures. Available fluid path materials are Stainless Steel and Titanium for standard and Bio-compatible UHP chromatography applications.

The LU Class is designed for fast, high pressure analytical HPLC, with increased peak resolution and exceptional retention time repeatability. The SSI advanced solvent select feature provides very accurate flow rates at high pressures for a wide variety of solvents, particularly where compressibility is a major factor. Pressure capability is 18,000 psi, with a maximum flow of 5 mL/min.

Standard features include automatic pressure compensation, complete PC control and status through RS-232 and Micro USB 2.0 ports, solvent select and user calibration. With pulse-free performance and precise control, the LU Class provides the highest flow accuracy over the entire pressure range.

Flow Rate Pressure Fluid Path Control
5 mL/min 18,000 psi Stainless Steel
or Titanium
RS-232, Micro USB
Voltage Flow Control

LU Class Specifications

Flow Rate and Max Pressure Ratings* 0.000 -5.000 ml/min (18,000 psi)
Pulsation** ≤0.75% from 3,000 psi to 18,000 psi
Pressure Accuracy +/-2% of full scale pressure
Flow Precision 0.5% RSD on ˃ 30 sec. average flows
Flow Accuracy Within 1% of set flow rate, 0.100 mL/min and above; 80:20 Water/IPA @ 5,000 psi
Wetted Materials (Options), Synthetic Ruby, Sapphire, UHMWPE, PTFE
Dimensions 6.3” H x 10” W x 17” D (16 x 25.4 x 43.2 cm)
Weight 27 lbs. (12.3 kg)
Power 100-240 Vac (± 10%), 50-60 Hz
Control RS-232, Micro USB, Voltage Flow Control, Run/Stop

* Flow Rate is dependent on solvent selection and operating pressure. ** Pulsation value with pulse dampener.