HIGH-PRESSURE, HIGH-TEMPERATURE 2-CHAMBER CELL WITH CHANGEABLE PATH LENGTHS FOR ACCURATE MEASUREMENTS OF ABSORPTION-COEFFICIENT

A cell with two sample chambers arranged in sequence is designed to pr ovide accurate absorption coefficients for the components of binary fl uid systems at high pressures and temperatures. Once primed, the cell allows one to obtain results over the whole range of temperature and p ressure required without disassembly and refilling. The method elimina tes or at least diminishes most of the possible errors automatically.