I am wondering with all the new small bean to bar chocolate makers if any are getting heavy metal testing done. This I am curious about because some makers maybe get a bag or two in from obscure sources and heavy metal testing may not be something that they think they need to do. I know that Haigh's here in Adelaide are very concerned about this aspect and every shipment is evaluated for heavy metals. With their import size as well Australian customs would get on their case about the levels too but with smaller imports they may slip through - at least for a little while until customs catch on.
Is it common practice for plantations to have their soils tested or beans tested before export? I would guess no judging by the fact that Haigh's test everything.
Also I do know that the Australian growers have their soils tested and this was a very important aspect of setting up the plantations.