"C/O DIFFERENTIAL AMPLIFIER UNIT,THREE ELECTRODES BASE UNIT,STORAGE OSCILLOSCOPE AND A DUAL DROPPING MERCURY ELECTRODE ASSEMBLY- AMPLIFIER SENSITIVITY 0.001 TO 100 MICROAMPS PER DIVISION,CELL SCAN RANGES ARE 0.5,1,AND 2 VOLTS W/RATES 0.01,0.02,0.05,0.1,0.2 AND 1 SECOND PER DIV,DROP DISLOGER W/AUTOMATIC TIMING ADJUSTABLE FROM 0.5TO 12 SECONDS,DEARATING GAS FITTINGS W/DUAL CONTROL VALVES"