HPLC AS-2050/55 and AS-2057 Autosamplers

JASCO HPLC autosamplers AS-2055/2057s are fully automatic injection systems enabling greater productivity and the highest level of precision. The key features of the JASCO HPLC autosamplers High reliability Excellent performance Remarkably low carry-over even for viscous materials Low cost of ownership; due to simple design Easy to use Can be added to any HPLC system   Flexible sampling, with up to two 96 well microplates for laboratory automation and combinatorial chemistry. Also available is a rack for 84x micro-vials or the standard rack for 50x 2 ml vials. The AS-2055/2057 offer 5 operating modes; normal, two methods of pre-column derivatisation, dilution, and zero-sample loss injection. The new larger AS-2050 has the same specifications as it's smaller brother but has double the capacity for higher throughput applications. JASCO's new data systems EZChrom and Chrompass can also be used to control the AS-2xxx family of autosamplers in a CFR21 part 11 compliant system.

Excellent injection reproducibility The AS-2055/2057 offer operation in both fixed loop or variable volume injection modes. The reproducibility achieved in fixed loop 20 µl injection is less than 0.2% RSD with less than 0.01% sample contamination. In variable loop fill; 10 µl injections give RSDs less than 0.3%. Complete flexibility Random sample access is provided as well as replicate injections and variable injection volume for each vial. Urgent samples can be given priority. Temperature control (AS-2057 only) The AS-2057 (or AS-2050 cooled) offers built-in Peltier cooling and heating,  to protect thermally labile samples or for precolumn reactions. Sample pretreatment capability Air segmented sampling enables the AS-2050/55/2057 to automatically mix up to two different solvents or derivatising reagents with the sample in a stand-alone mode. By automating the processes of derivatisations, the sample pretreatment capability saves time and improves the precision of complex chromatographic analyses. Interfacing with the JASCO HPLC system The AS-2050/55/2057 can be used as a stand-alone module through the built-in keypad and LCD display, or integrated into a JASCO HPLC system with PC control. In stand-alone mode, the advanced microprocessor of the AS-2055/2057 offer 10 user friendly programs with 64 steps per program. The AS-2055/2057 can freely interact with other HPLC modules via the built-in LC-Net interface and can also easily be triggered from an external event generated by a computer or other LC modules. Full PC control is also provided when incorporated in a JASCO HPLC system with our new Chrompass for Windows 2000/XP system.