I bought a -100*C refrigerated cold trap from a surplus sale, which was not operational. In this video, I describe how the unit works after recharging its second stage with R1150 (ethylene) refrigerant.
Savant RVT4104 – (manual) https://phoenix.tuwien.ac.at/chemistry/Gebrauchsanweisungen/SAVANT%20Vapor%20Trap.pdf
Post time: Jun-28-2017