Patent ID: 7926440

Claim:
A device comprising: a chamber that is substantially metallic, wherein the chamber comprises a first side comprising a fluid inlet and a second side comprising a fluid outlet, the second side being opposite to the first side; a first stage, positioned within the chamber and between the first and second sides of the chamber, wherein the first stage comprises a first stage heater that is resistively heated and is a source of heating of a first solid material supported by the first stage; and a second stage, positioned within the chamber and between the first stage and the second side of the chamber, wherein the second stage comprises a second stage heater that is resistively heated and is a source of heating of a second solid material supported by the second stage, wherein a fluid entering the chamber through the fluid inlet on the first side of the chamber flows over the first stage and the second stage before exiting the chamber through the fluid outlet on the second side of the chamber, wherein the chamber comprises: a first port on a third side of the chamber; a second port on the third side; a third port on a fourth side of the chamber, wherein the fourth side is opposite to the third side; and a fourth port, opposite the second port, on the fourth side, wherein the first, second, third, and fourth ports comprise at least one of silicon oxide or aluminum oxide.