Influence of transcription techniques on the precision of autoanalyser assays.

85 Summary In this brief review a manual micro-Kjeldahl digestion procedure is outlined, which is satisfactory for most substances of biological origin. The final step of ammonia determination may be achieved by steam distillation and titration, if only one or two samples are to be processed. If up to say thirty or forty analyses/d are to be analysed then the semi-automated procedure has considerable advantages. If more than 50 and up to IOO samples must be analysed/d then the suitability of the fully automated method should be carefully considered. Depending on availability of staff and digestion equipment such large numbers could also be processed by the semi-automated procedure outlined above.