The Dual Microiontophoresis Current Generator is an electrically isolated, battery-operated instrument designed for the electro-iontophoresis of dyes, drugs and charged substances from micropipettes. Two identical battery operated current generators are available. In ordinary use, the two current generators are operated in parallel providing two distinct currents; one for preventing substances in the micropipette from outward diffusion (the retain or hold current) and the second for actively ejecting charged material. For pipettes with submicron tips, a hold current may not be necessary if there is little outward diffusion of pipette material. Model 260 is powered by two 9-volt alkaline batteries per side (four, in total); unique circuitry converts the ±9?V to ±100 V without a transformer, yielding an exceedingly quiet output.
| OUTPUT |
Constant current, floating |
| OUTPUT RANGES |
0 to ±100 Na, 0 to ±1000 nA |
| OUTPUT POLARITY |
Switch selected |
| COMPLIANCE (EXCURSION) VOLTAGE |
100 V |
| METER |
Analog meters, ±2% accuracy |
| OUTPUT RESISTANCE |
>100 MM�© |
| NOISE |
Less than 20 μV typical DC to 10 kHz through 1 MM�© independent of current delivery |
| LEAKAGE CURRENT TO GROUND |
Less than 0.5 nA |
| OVERVOLTAGE ALARM |
Front panel light |
| HOLD & EJECT SWITCH |
Manual or by remote logic |
| POWER |
Four 9 V alkaline batteries, included |
| DIMENSIONS |
17 x 5.25 x 10 in.(43 x 13 x 25 cm) |
| SHIPPING WEIGHT |
13 lb (5.9 kg) |
