Re: QTCThat's true, but it throws out the idea of using anonymous remailers, which is highly inconvenient if you live in a red flag country like the Netherlands. I mean, you could theoretically repack the product, but it's making life a hell of a lot more complicated. Trust issues etc.I'm curious about how precise this process can be. Because if it can be highly specific down to the minute/second...I imagine there's a lot of caveats that make it unlikely for that to be the case though.Re: kmfkewmIt may be worth paying a materials scientist to work out the statistics for different drug/plastic combinations. There should already be some literature out there somewhere on the subject, I'll have a root around. Ampoules look interesting for bulk quantities (relatively speaking to my 7-10g rule).Also, there is an approximate formula here you might be interested in:https://en.wikipedia.org/wiki/PermeationQuoteThe mass flow qm through a barrier layer can within certain pressure limits be linearized and approximated by:qm = Perm A p / deltawith qm the mass flow, Perm the specific material permeability, A the surface area, p the pressure difference, and delta the material thickness. In Europe the permeability unit is mostly cm3.mm/(m2.Bar.day), so that the gas flow in cm3/day results when the area is given in m2, the thickness in mm, and the pressure difference in Bar.In American units, the permeability is often given in cm3.mil/(100 inch2.Bar.day) which can be converted to the European unit by dividing by 2.54.In SI units, it is given in s-1.