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Distillation has long been the method of choice for the production of water for injection (WFI) for the biopharmaceutical industry. April 2017 saw the European Pharmacopoeia amend its guidelines to permit the use of alternative techniques that generate water of an equivalent quality to distillation, in line with its United States and Japanese counterparts, which have allowed the use of other technologies for some years. Almost a year on, we take a look at some of the questions companies commonly ask when deliberating over which approach is the most suitable for their particular situation.
Pure water is used almost everywhere in the lab, from being a key reagent in your day-to-day experiments and assays to performing those "behind the scenes" functions like autoclaving, cleaning and water bath set-up. However, it can be tricky to select the right purity for the type of work you are doing.