We all know that we need to make sure that we have consistency and accuracy in our data. Determining and understanding the roots of user error is the easy part, but how to minimize or eliminate user error can be difficult. A critical point in the sample prep workflow comes when we move samples from processing to evaporation. This transfer step is where most accidents usually happen, be it mixing up of samples, mislabeling of collection vessels, or even dropping the sample, all of these scenarios are detrimental to analyses providing inaccurate results or no results at all.
Anyone familiar with Extractable Petroleum Hydrocarbons (EPH) methods such as those developed by Massachusetts DEP, New Jersey DEP, or one of the other various state agencies that regulate EPHs is familiar with the long and grueling process of fractionation.