High-pressure, high-temperature two-chamber cell with changeable path lengths for accurate measurements of absorption coefficient

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