Transformer oil testing is a crucial process in maintaining the integrity and performance of electrical transformers. It involves analyzing the dielectric properties, chemical composition, and physical characteristics of the insulating oil used in transformers. A transformer oil testing lab, such as Sigma Test, specializes in conducting these tests to assess oil quality, detect potential issues, and ensure the transformer's reliability. These tests help prevent transformer failures, extend their lifespan, and safeguard the electrical infrastructure. Sigma Test and similar labs offer a range of services to support the efficient operation of transformers in various industries.