Chromatography

LC-20A solvent delivery pump systems cover a wide application range with optimised performance under any condition. LC-20A series consists of 3 pump types: The tandem piston pump, LC-20AT, the dual-piston pump, LC-20AD and the binary dual-piston pump, LC-20AB. In terms of durability and performance the LC-20A series pumps are a further improvement of the proven LC-10AVP series providing a number of additional useful features and improvements. As part of an HPLC system those pumps can incorporate the CBM-20Alite interface to control the entire LC system via web browser or instrument control software. Prominence series solvent delivery pumps can be equipped with optional automatic piston washing kit. The gradient valve for LC-20AD and LC-20AT can be used as well for solvent selection and be combined with binary or ternary high pressure gradient systems.

The LC-20AD and LC-20AB pump designed in micro volume double piston technology provides pulsation free solvent delivery from real micro flow applications up to semi-preparative flow rates. Merely select the suitable mixing chamber for the appropriate application range. The flow rate ranges from 0.1 µl/min up to 10 ml/min. The high resolution flow rate stetting combined with the small piston stroke volume allows for gradient elution in semi micro range without using an additional flow splitter. The pumps can be configured as quaternary low pressure gradient system (AD) and as high resolution (0,1 %) binary- or ternary- high pressure gradient system. Beside this dual independent high pressure gradients can be operated simultaneously in one HPLC system.

Within an HPLC system 2 LC-20AB can be used for independent binary high pressure gradient elution. Beside this it is possible to combine up to 4 LC-20AB pumps to simultaneously perform the same binary high pressure gradient elution, which enhances configuration flexibility of multiplexed systems.

The LC-20AT with serial piston design, which covers the range from semi micro to semi preparative flow ranges, can be configured as quaternary LPGE as well as binary- and ternary HPGE system. To minimise the internal dead volume the low pressure gradient valve is installed into the pump unit. This robust pump for routine application provides high flow rate accuracy within the flow rate range from 1 µl/min up to 10 ml/min.