A recent webinar entitled ‘What to consider when making the buying decision about a heat transfer fluid (HTF) for your system’, hosted by Process Heating, discussed the costs associated with the management of HTFs over and mentioned how HTFs could be protected through fluid and system preventative maintenance, which is more commonly referred to as routine sampling and chemical analysis. However, the presentation did not make it clear that sampling and chemical analysis needs to be conducted on a regular basis for each and every HTF. Indeed, there are common misconceptions / myths about the sampling of HTFs and such misunderstandings need to be avoided. The current article was written to address some commonly held misconceptions with the intention of busting the myths behind them. Herein, ten common myths are presented in an attempt to bust these myths.