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) http://phoenix.tuwien.ac.at/chemistry/Gebrauchsanweisungen/SAVANT%20Vapor%20Trap.pdf
Saturday, July 26, 2014
Wednesday, July 16, 2014
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Monday, July 7, 2014
How to electropolish aluminum
I show a basic electropolishing technique that requires no special equipment and has proven to work well on aluminum (aluminium).
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