Laser induced fluorescence (LIF) technique was used to perform experiments of liquid distribution in corrugated structured Perspex packing. The technique was based on continuous detection of intensity of fluorescence change. In order to validate the feasibility of this method
liquid distributions of three systems in 750Y corrugated structured packing were investigated. The LIF technique was very useful not only for the identification of liquid distribution
but also for quantification of liquid film thickness and liquid hold up on the structured packing surface. Both interfacial tension and viscosity of experimental systems could affect liquid distribution but interfacial tension's influence was more remarkable.