What Are PCBs in Transformer Oil?
PCBs are synthetic organic chemicals with chlorine atoms that were historically used for their stability and insulating properties. However, they pose severe risks to human health and the environment, including:
- Carcinogenicity (cancer-causing potential)
- Bioaccumulation in ecosystems
- Soil and water contamination
- Long-term ecological damage
Even trace levels of PCB contamination in transformer oil can trigger legal liabilities and equipment replacement mandates.
Test Standard
ASTM D4059 – Standard Test Method for Analysis of Polychlorinated Biphenyls in Insulating Liquids by Gas Chromatography
How PCB Testing Works
Oil samples are collected in clean, contamination-free bottles
Samples are analyzed using Gas Chromatography with Electron Capture Detection (GC-ECD)
Results are compared against regulatory thresholds (e.g., 50 ppm for “PCB-contaminated” classification)
Reports include quantification, classification, and safety recommendations
Key Gases Measured
Insulating Liquids – Measurement of Relative Permittivity, Dissipation Factor (Tan δ) and DC Resistivity.
| PCB Concentration (ppm) | Classification | Action Required |
|---|---|---|
| < 2 ppm | Non-PCB | Safe for use |
| 2 – 49 ppm | PCB-Contaminated | Restricted use; may require disposal plan |
| ≥ 50 ppm | PCB-Containing | Immediate disposal; hazardous waste |
Why PCB Testing Is Critical
- Ensures regulatory compliance with environmental norms
- Supports safe disposal and decontamination
- Prevents soil, water, and air pollution
- Protects worker health and community safety
- Avoids penalties and equipment shutdowns
Our Process
- Vacuum-sealed oil sample collection with barcode tracking
- Laboratory-grade GC-ECD analysis per ASTM D4059
- Secure data logging into our AI-enabled ERP system
- Compliance report with interpretation and recommendations
- Optional waste management advisory for contaminated equipment
Report Includes
- PCB concentration in ppm
- Regulatory classification (Safe / Contaminated / Hazardous)
- Instrument calibration and test temperature
- Legal compliance references (CPCB, EPA, etc.)
- Actionable guidance for handling or disposal
Why Choose Tru-FIL?
- ASTM D4059-compliant testing methodology
- NABL-grade instrumentation and clean-room processes
- AI-driven ERP integration for fast reporting
- Nationwide sample pickup and 24/7 lab availability
- Certified disposal guidance for PCB-contaminated oils