In the pharmaceutical industry, the chemical integrity of the compounds may rely on the strict control of hundreds of variables, from air humidity and freezer temperatures to mixing times. Active Pharmaceutical Ingredients (APIs) may be used in anything from prescription drugs to cough drops. Other high-purity substances rely on strict environmental control for production. Because these controlled substances and pharmaceutical compounds must be perfectly consistent across each batch, records of every aspect of the process must be maintained, from storage to mixing and processing, to transport and delivery.

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