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Comment by schipplock | Hacker News Reader

  What reasoning do you have for avoiding plastic?

BPA and BPS, I guess.

You're brewing coffee at <100°C, and all the plastic coffee brewers I've used have been BPA+BPS free (i.e. polypropylene)

Is there still any known issue? If they meant BPA, surely they could just say that?

Not sure about polypropylene, but both nylon and PET are known to shed billions of micro/nano-plastic particles into 95 °C water.

Note they studied mesh bags. Flat surfaces with less exposed area should have lower emission rates. Still not great.

BPA is fine, but I'm more of a lead poisoning kind of guy.