npi electronic VA-10





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npi electronic VA-10

Designed at the Max-Planck-Institute for Experimental Medicine in Göttingen as an economically priced alternative to do-it-yourself systems and expensive commercial systems.

A sensitive (picoampere range) current amplifier for voltammetric measurements with carbon-fiber microelectrodes in biological systems, where the total currents do not exceed a few tens of nA.

npi electronic VA-10
Optional frequency booster for recording very fast signals

Filter settings from 20 Hz to 20 kHz in sixteen steps, 4-pole or 8-pole Bessel filter (1-pole filter on request)

3-electrode headstage for a floating command potential available

Gain settings from 0.5 to 50 mV / pA in seven steps

Precise built-in voltage source for DC amperometry (+/- 1000 mV standard, +/- 2000 mV optional)

Low noise, works in picoampere range

Ideally suited for recordings from single cells

Can be operated with external waveforms for cyclic voltammetry

Telegraph outputs for easy interfacing to data acquisition systems

Allows simultaneous electrophysiological recordings during voltammetric or amperometric investigations using headstages with differential inputs

Can be used in scanning electrochemical microscopy

Also suitable for lipid bilayer recordings

Use with 5 µm carbon fiber electrodes (ALA-CFE-2)

Intra-membrane signalling between the voltage-gated Ca2+-channel and cysteine residues of syntaxin 1A coordinates synchronous release

Scientific Reports


Electroporation followed by electrochemical measurement of quantal transmitter release from single cells using a patterned microelectrode

Lab on a Chip


High transconductance organic electrochemical transistors

Nature Communications