Reliability of analytical information in the XXIst century

One of the most relevant bottlenecks of the progress of analytical sciences is the existence of adequate references in general and, in particular, of measurement standards for analytical processes and their proper use in the context of metrology in chemistry. Keywords such as traceability, uncertainty, calibration, etc. are crucial to characterise the analytical information. All of them can be summarised by using reliability as an overall analytical attribute. The main aim of this paper is the systematic consideration of this basic approach among the trends in Analytical Chemistry, particularly in qualitative analysis.