WPI Duo 773 Electrometer

The Duo773 has two channes for differential or intracellular ISE with an integrated DC current generater and external control input. It has an integrated low pass filter. The bridge balance circuit nullifies the electrode voltage drop. And, it has an integrated "tickler" circuit with patent-pending electrode flutter technology. It has integrated test ports for each channel and dual capacitance compensations with output offse controls. The Duo773 comes complete with two probe headstages, normally one high impedance ona one low impedance.

Features:

• Dual channel, single ended recording
• Differential recording
• Bridge circuit nulls electrode voltage drop
• Assign low pass filter to either channel
• Very high impedance can be used with intracellular ISE

Two gold-plated, epoxy sealed miniature active probes can be positioned directly to the measurement site. Microelectrode holders containing an Ag/AgCl electrochemical half-cells plug directly into the probes. Stray capacitance can be reduced by placing the included driven guard shield over the microelectrode holder at the end of the probe.

A Tickler Circuit assists in cell penetration. The frequency and amplitude of the oscillations may be varied for differences in membrane thickness or cell size. The duration of tickle can be controlled either by using the momentary switch, a foot switch, or by applying a signal to the remote tickler input.