Abstract: An automated sample changer, controlled by gas fluidic circuitry, integrated with a Nuclear Magnetic Resonance (NMR) spectrometer provides a means for sequentially transferring samples to and from such spectrometer without an attendant to control such transfer. Such a changer comprises a means for holding a series of samples, a robot arm cooperating with such holding means and disposed in alignment with the sample receiving tube of an NMR spectrometer, a gas fluidic circuit to sense the required action, and a second gas fluidic circuit integrated therewith to provide the energy to make the transfer.

Abstract: A continuous flow-through mercury cathode electrolysis cell is described having a parallel anode and cathode and a non-conductive porous diaphragm separator. The cathode chamber is constructed so as to develop turbulence in the catholyte flowing therethrough to effect the maximum contact between the mercury and the catholyte solute and to promote removal therefrom of any gaseous by-products. Built-in heat exchangers provide efficient control of temperature sensitive electrolyses.