Multilevel analysis of variance used to partition components of optical imprecision in an analyser system with disposable cuvettes

ACKNOWLEDGEMENTS The authors thank the Department of Health and Social Security for providing the system to be tested, Dr Burnett of St Albans City Hospital and Dr Cheng of Watford General Hospital for their help with the comparative studies and the staff of Instrumentation Laboratory Ltd for their co-operation. The advice of Dr S S Brown of the Clinical Research Centre, Harrow and Dr W Percy-Robb of Edinburgh Royal Infirmary is also gratefully acknowledged. REFERENCES [1] Gibson PF, Calzi C, Musetti A, and Caliri R. X International Congress of Clinical Chemistry, Mexico City, 1978. 2 Broughton P M G, Gowenlock A H, McCormack J J, and Neill DW (1974) Annals of Clinical Biochemistry, 11,207-218.