[Infinity315]

> I didn't see anywhere that they weren't changing the filters enough.

I don't think you've read observation #11 or my comment.

From observation #11:

> Apple does not appear to have included all the solvent waste streams when calculating the breakthrough times for the "Activated Carbon" boxes to ensure no VOCs are released into the atmosphere onsite.

Breakthrough times are a function of how much VOCs you are putting through them. If you under account for the amount of VOCs you will overestimate the "true" breakthrough time.

[PROgrammerTHREE]

Got it. Still not worried about my health, though.