Knudsen Effusion Mass Spectrometry is an important research technique to determine the partial pressures of vapour species at equilibrium over different materials at a given temperature. The vapour pressure is one of the fundamental properties of a material and needed for any modelling involving temperatures where it is not negligible. Many research groups worldwide use Knudsen Effusi... https://www.bekindtopets.com/great-deal-Mohair-Throw-Torquay-mega-pick/