Sample analysis – Is there a ‘right’ result?

Whatever method you use or property you measure, analytical tests will always involve a degree of uncertainty – as a result of, for example, inaccuracies in weighing and measuring. Analyse the same sample twice and you’re likely to get two slightly different results. Both will essentially be correct – the key is knowing how to compare them, and understanding the possible causes of error. To be able to obtain a ‘right’ result in sample analysis first it is necessary to say exactly