I wish to test the conductivity of a solid electrolyte metal oxide pellet at high temperature for solid oxide fuel cell applications. I already possess a tubular furnace for the heating and a sourcemeter (with 4 probes) for the conductivity measurement. What I lack is a setup/assembly that can hold the pellet and facilitate the measurement. So I am looking for a good manufacturer based in India and well versed in solid oxide fuel cells or electrochemistry who can build me such an assembly for housing rectangular pellets with the necessary parts for accommodating the wires and other components. Basically they should be able to build a custom design but if they have readily available setups that will facilitate 4-probe conductivity measurement (above 500 °C) of SOFC electrolytes, that will suffice too.