Flowspek AG, Hegenheimerstrasse 4, 4055 Basel
Tel.: 061 695 9696, Fax.: 061 695 9697
AZURA AS 6.1L HPLC Autosampler
The Autosampler AS 6.1L can inject from up to 768 positions when equipped with microtiter plates (either high or low formats) or from up to 108 standard 2 ml sample vials. Sample carryover is significantly minimized thanks to a highly-effective interior and exterior needle wash procedure.
This autosampler is also fast and flexible: one complete sample injection cycle takes less than one minute, including needle wash.
Three different injection modes are supported; ʺfull loop fillingʺ (highest precision and reproducibility), ʺpartial loop fillingʺ (variable volumes, e.g. for dilution series) and ʺμl pickupʺ (loss-free injection of extremely small sample volumes), allowing the user to optimize sample usage.
The headspace pressure function prevents bubbles from forming in the vial during sample uptake. Precolumn derivatization is supported.
For high-pressure injections of up to 700 bar, the autosampler is equipped with a so-called ILD™ valve (Intermediate Loop Decompression).
This valve consists of a rotor-stator combination and includes a central port for depressurizing. For high pressure applications, the sample loop is depressurized prior to receiving the sample therefore the sample is not diluted with solvent.
The injection valve is switched extremely fast, thus reducing pressure spikes which makes the analysis more precise and reduces wear of the column.
A preparative version for sample volumes up to 10 ml is also available.
Knauer offer nine diferent version of the Autosampler AS 6.1L including a preparative version for sample volumes up to 10 ml is also available.