Transformer oil, also referred to as insulating oil, is stable at high temperatures while offering superb electrical insulating properties. Water impacts the insulation’s dielectric properties as well as insulating materials’ aging rate. As such, limits of 30 to 35 ppm of water in the transformer oil are generally referenced as acceptable standards. Ensuring that water content in the transformer oil remains low is an important consideration when ensuring the safe operation, aging, and reliability of a transformer. In extreme circumstances, transformers may even fail as a result of excessive water in the insulation. The use of Karl Fischer titration in conjunction with an oven sample changer is a widely recognized, established, and accurate technique for the determination of water content in transformer oils.