It does not have to be a binary weapon and it probably is not. All it needs to be is a contained chemical or bio substance. Any small amount of explosive will spread it.
Agreed, and I hope to be proven wrong, as well, but if it has tubes/hoses that kind of points to moving a chemical frow one place (storage) to another place (mixing) hope it turns out to be a Thermos and a siphon hose.