A blood-mimicking fluid (BMF) suitable for use in Doppler flow test objects is described
and characterised. The BMF consists of 5 microns diameter nylon scattering particles
suspended in a fluid base of water, glycerol, dextran and surfactant. The acoustical
properties of various BMF preparations were measured under uniform flow to study the
effects of particle size, particle concentration, surfactant concentration, flow rate
and stability. The physical properties, (density, viscosity and particle size), and
acoustical properties (velocity, backscatter and attenuation) of the BMF are within
draft International Electrotechnical Commission requirements.