Sound speed and density characterization of milk adulterated with melamine

Luis Elvira1, Jaime Rodríguez, Lawrence C Lynnworth

  • 1Instituto de Acustica, CSIC, Serrano 144, Madrid 28006, Spain. lelvira@ia.cetef.csic.es

Milk contaminated with melamine resulted in an important health hazard that affected many babies in China recently. Ultrasonic characterization of adulterated milk may detect gross levels of melamine contamination. Sound speed and density measurements were made in skim milk as a function of melamine adulteration. An ultrasonic measurement technique to implement milk quality control is discussed.