MODEL EQ-751 EW-753 0-300V, 100ma, Constant Voltage/ Constant Current U.G., P.G., Biotech Good results are obtained with constant current mode. EQ 751 gives constantCurrent from 5mA to 100mA over the entire duration of the experiment MODEL EQ-752 0-300V, 100ma (Programable timer for Auto shut off) Constant Voltage/ Constant Current U.G., P.G., Biotech Good results are obtained with constant current mode. EQ 752 gives constantCurrent from 5mA to 100mA over the entire duration of the experiment ELECTROPHORESIS POWER SUPPLY