IPA

Scientific, research, and pharmaceutical research apparatus, namely, computer hardware, electronic amplifiers, microelectrode amplifiers, multipurpose amplifiers, voltage clamp amplifiers and recorders, electrodes not for medical use, intracellular electrometers not for medical use, analog [ and digital ] headstages, digital signal conditioners, analog to digital converters, digital to analog converters, voltage stabilizing units, electrode holders not for medical use