title: Comparison of the Sahli and grey wedge haemoglobinometers.
abstract: Experiment confirms that the MRC grey wedge photometer is better for haemoglobinometry than the Sahli haemoglobinometer. However, there is considerable observer variation and the precision of those who undertake haemoglobinometry should be studied by analysis of duplicates. Only in this way can the significance of any measurements obtained be assessed.
mesh_terms: D006452:Hemoglobinometry / Q000295:instrumentation* / Q000592:standards; D006801:Humans; D010783:Photometry / Q000295:instrumentation