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Experiments show that the simple paddle stirred cell provided an oil drop dispersion that was as monosized as that produced by the controlled shear device, if not better.An analysis indicated that only the section of the membrane close to the radius of the highest shear under the paddle stirred membrane produced oil drops. The membranes used in the experiments contained a regular array of non-tortuous pores uniformly spaced and provided oil injection rates up to 1000 l m -2 h -1 , which is much higher than reported fluxes for the alternative tortuous pore channel membranes made by sintering.keywords emulsification, rheology, sieve-membrane, force balance

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