The argon was supplied by Air Liquid Alphagaz 2Ar (stated molar purity 99.9999%) and the feed in was made flowing the
gas by two gas chromatogThe values for the radius measured at five different temperatures T = (250, 273.15, 300, 325, and 350) K and pressure range from 0.1 MPa to 20 MPa are fitted by a quadratic function of pressure for each temperature as detailed in equation (10) :raphy filters, which according to manufacturer specifications reduce impurities lower than: