That, in science, is called "lying".
Either you publish the range of results, the average plus standard deviation or average plus standard deviation of a subset with the exclusion criteria and exclusion range. Picking a result is a lie, plain and simple, and messiness is not an excuse.
See my comment too, you jump to lying, but as the GP said, chemistry is messy.
Hence the crisis we have in science today.
As an aside, I'm working at a QC chem lab now, with results that have a direct impact on revenue calculations for clients. Therefore the reports go to accountants, therefore error bars dont't exist. We recently had a case where we reported 41.7 when the client expected 42.0 on a method that's +/- 1.5... They insisted we remeasure because our result was "impossible" The repeat gave 42.1, and the client was happy to be charged twice