The Alph NG app performs quick and accurate process calculations, including two- and three-phase flash calculations, phase envelopes, and hydrate temperature and pressure prediction. It uses Virtual Materials Group’s package of Advanced Peng-Robinson equations of state for natural gas and commercially important natural gas compounds, specifically: C1–C10, CO2, H2S, N2, O2, H2O, H2, He-4, methanol, ethanol, ethylene glycol, diethylene glycol, triethylene glycol, methyl mercaptan, ethyl mercaptan, carbonyl sulfide, carbon disulfide, dimethyl sulfide and dimethyl disulfide.