Stringer M F, Marples R R
Br J Dermatol. 1976 May;94(5):551-5. doi: 10.1111/j.1365-2133.1976.tb05145.x.
Methods of sampling the microflora of human skin by means of a generator of ultrasonic impulses were compared with the standard washing method in which the skin surface is rubbed manually. The ultrasonic method, at a power setting of 50 W or more, gave essentially similar results to those obtained by the standard method but removed fewer corneocytes.
