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Most of the microhaematocrit centrifuges (MCH) in Nigerian health institutions have ceased to function due to lack of spare parts and poor servicing. The author carried out a study using the angle-head centrifuge (AHC) for estimating packed cell volume. The efficiency of packing was identical for both the AHC and MHC with a similar short time for centrifugation.
Sehr et al. (Wed,) studied this question.