A long time ago, I discovered that there was a publication called Potato World Weekly. (No idea if it still exists.) It was a tabloid-size glossy, not terribly skinny, a weekly (as it said), and, perhaps not surprisingly, really expensive.<p>I still find it pretty funny, but the wider point is that I would not be at all surprised by a trade journal for continuous-duty air samplers and continuous-duty air sampler accessories. Or more likely, a subscription site.