Collection of urine and faeces in children, with a note on fat balances.

In 1959, Wilkinson and Baldwin described a disposable plastic urine collector for use in boys and girls. In the light of further experience this has been modified and the new bag is illustrated in Fig. 1. Two sizes of bag are available as before: bags of 8 in. x 3 in., and 12 in. x 4 in., for babies up to 3 months and over 3 months respectively. The new bag differs from the older pattern, first in having no hole for the anus, the plaster being of such a size that it terminates just before the perineum reaches the anus, and secondly in having a pattern for three sizes of genitalia stencilled on both sizes of plaster, thus making it easier to fit the plaster.