I only rarely see capacitors marked as "containing PCB".  These are usually quite new caps, not the ones in vintage gear'

I rely on the trade names to decide if a capacitor or transformer contains PCB.  You can see a list of some of these names at

https://en.wikipedia.org/wiki/Polychlorinated_biphenyl

I've done a number of projects to replace PCB capacitors at broadcast transmitter sites.  The trade names I remember seeing most frequently were

Pyranol
Askarel
Dykanol
Clorinol
Santotherm

I don't have much concern about occasionally touching dielectric oils containing PCB.  I just clean up the area carefully and wash my hands thoroughly.  But I worry very much about having PCB around if there is a significant chance of fire.  In a fire, I understand that PCB can change into other very toxic chemicals that we do not want to breathe.


Steve WD8DAS  
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