I think it's pretty clear really. Maybe the leaflet that probably goes with it moght clarify any issues users may run into. But honestly, I don't think it gets much clearer than this. Nice job.
Btw PE once spoke his doubts on the long term usability of those ziplock baggies when I told him I keel my CD3 and CD4 in them. This will not be an issue up to something like a year or so, so I'm not sure if it needs looking into, but I just wanted to rwlay what he said to me.