Chloramine T:-Chloramine-T is slightly basic (pH typically 8.5). In water, it breaks down to the disinfectant hudrochlorite. Chloramine-T is available in tablet or powder form and has to be dissolved before Introduction Many developing countries do not have access to the best medical diagnostic technologies. These medical devices are designed for airconditioned laboratories, refrigerated storage of chemicals, a constant supply of calibrators and reagents, stable electrical power, highly trained personnel and rapid transportation of samples. Micro-fluidic systems designed today allow miniaturization and integration of complex functions, which could move sophisticated diagnostic tools out of the developed-world laboratory. These systems must be inexpensive, but also accurate, reliable, rugged and well suited to the medical and social contexts of the developing world.