QUALITY ASSURANCE IN WEIGHING

Weighing is the most used step in any analytical procedure, and the ba lance is the one essential piece of laboratory equipment in all analys es. Yet weighing is a common source of error in final analytical resul ts and can be difficult to detect, Analysts may become complacent and expect all weighings to be accurate. Our laboratory experienced a prob lem in weighing and found that the principal error was due to drift. T he ensuing investigation into the cause led to a procedure for reducin g drift, which, in turn, ensured accurate weighings that have improved quality assurance in our total operations.