CR-7A PLUS CHROMATOPAC 115V Works With HPLC,GC C-R7A Chromatopac with 40 Mbytes Hard drive,One 1.44 Mbytes Floppy drive. The C-R7A Personal Chromatopac Chromatography Data Processor is a laptop style,full featured data processor with LCD display. Operation is performed either using a simple oper