We have assessed the effectiveness of using an osmotic sachet for safe rehy
dration of therapeutic milk from contaminated water supplies in a poor urba
n area of Bangladesh. 35 women were given sachets to hydrate in their homes
and comparison of the hydration water and the reconstituted milk showed th
at the high bacterial contamination reported in the domestic water supply w
as removed by use of the sachet. The mean rehydration time was 4.5 h (range
3.4-5.5). This rehydration method could have a role in the preparation of
therapeutic feeds where microbiological contamination of the environment is
a serious problem and availability of adequate water is not a limiting fac
tor.