The development of a haemoglobinmeter and field microscope for primary health care use in developing countries

There is a pressing need for appropriately designed diagnostic instruments for rural health clinics in developing countries. This paper describes some work carried out in conjunction with Primary Diagnostics Ltd. to develop a haemoglobinmeter (the Anaemascan/sup TM/) and a field microscope. Both designs are tailored to their severe working environment and to as low a price as possible given their specification. The paper describes the design approach and the measures taken to ensure the effectiveness of the instruments.