What is included in a transformer oil sample kit for field testing?

A field testing kit often includes a portable breakdown voltage tester, moisture test capability, sampling bottles, valve adapters, and basic accessories for clean sampling. Some kits include temperature measurement, conductivity or resistivity checks, and quick acidity screening. For full diagnostics, samples are still sent to a lab for DGA, furan, and detailed chemistry. The field kit helps screening decisions, such as whether oil is safe to keep in service, whether filtration is required, or whether urgent lab testing is needed.