Contact angle measuring instrument DSA30R

for food applications

Emulsions and foams are constantly in motion during production or transport. The interfaces of droplets or bubbles are stretched during these processes and the surface tension or interfacial tension responds to the stretching. The speed and degree of this response have an impact on the stability of food or personal care products and influence the yield in enhanced oil recovery (EOR). Interfacial rheology measurements with the DSA30R Drop Shape Analyzer give the relevant results for optimizing products and processes. Applications • - Emulsions and foams for food or personal care • - Surfactant flooding mixtures and foam in enhanced oil recovery (EOR) • - Demulsifiers • - Defoamers and anti-foaming agents • - Surfactant development Measuring methods • - Interfacial rheological behavior of a pendant drop or a bubble with periodically alternating volume • - Carrying out a measurement up to 20 consecutive times and displaying the results together Measuring results • - Elastic modulus (storage modulus) E' • - Viscous modulus (loss modulus) E'' • - Static surface and interfacial tension