|Method||Transformer Insulating Oil Tester|
|Standards||ASTM D 1816, ASTM D 877, IEC 60156|
Polychlorinated biphenyls (PCBs) are organic compounds historically deployed for use as insulating oils in transformers on account of their extremely inert nature. Use of these compounds were banned in the UK in 1981 on account of their carcinogenic (cancer-causing) nature, however their legacy remains in many older transformers.
The PCB is separated from the transformer oil by solid phase extraction (SPE) before being collected ready for GC testing.
The amount of PCB present in the sample based on three common PCB congeners – Arochlor 1260, Arochlor 1254 and Arochlor 1242, typically presented in mg/L.
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