I love this idea and really want you to find a way to succeed, but certain aspects of this idea have risks you need to weigh. I can only comment on lead, becau

I love this idea and really want you to find a way to succeed, but certain aspects of this idea have risks you need to weigh. I can only comment on lead, because I've had home lead testing done by a professional. The worry I have with lead is that encouraging vacuuming for sample collection could conceivably cause lead contamination to spread. We were told by our tester that if we attempted to clean problem areas ourselves, to only use water and disposable rags to avoid spreading lead dust. Our lead tester used an XRF analyzer (these devices are expensive), which uses X-rays and requires no dust sampling. He could simply point it anywhere and see precisely where all the lead was. I wonder if it would be feasible to include a packet of special wipes instead of a single dust vial. Then users could individually wipe and label by room, and ship each wipe in a separate, sealed, labeled, plastic envelope. This could solve any dust contamination issues, but I suppose it's possibly harder to test for contaminants from a wipe than a vial.