Pump

• Optimized for ECD applications
• High accuracy at low µL flow rates
• Automated piston wash
• Integrated degasser and solvent selector valve

The ALEXYS UHPLC pump – P6.1L – with its lowest flow pulsations has been designed for use with electrochemical detection. The UHPLC pump features a dual piston design, therefore, under optimized conditions no noise is detectable from the piston stroke. An automated piston wash is applied to remove traces of salt and other contaminants from the backside of the pistons, increasing the lifetime of the pump seals. The pump head can deliver flow rates in the low µL/min range up to 10 mL/min.

In the standard configuration the ALEXYS UHPLC pump has a high efficiency multi channel integrated degasser. The degassers uses Teflon AF amorphous fluoropolymer membrane for efficient gas permeation at every flow rate. In addition a solvent selection valve is present to be able to quickly select another solvent, for example to program a post-run wash step using a strong eluent.

The P6.1L UHPLC pump is available with a quaternary Low Pressure Gradient (LPG), a binary High Pressure Gradient (HPG) and with a Bio-inert flow path. In all these models the high efficiency multichannel degasser is included. High pressure operation up to 700 bar (10,000 psi), as used in Ultra-High Pressure Liquid Chromatography (UHPLC), is easily supported. The various pumps meet the requirements of just about every application.