I still have most of a 100L tank of D2. In the past, I've been willing to share some, but found it illegal to ship a cylinder of compressed gas, and prohibitive to set up to do it legally. I got your same thought reading this thread. It appears to be legal to ship these cartridges. Amazing you can get 10L in there, but of course when you go from gas to solid....Rex Allers wrote: I've thought, if nothing else, maybe the cartridges could be a way for someone who gets a D2 tank to share by filling some of these cartridges and thereby sharing and dividing the cost of purchase. This assumes many who get a tank of D2 will have more than they really need and might be willing to share some for a price, if we can come up with a workable design and procedure.
On ebay I found refill fittings for about $25 that do the same thing you constructed for yourself. Allows a refill of a Hydrostik from a compressed hydrogen source. 1/8" tube lets you hook up to a compression fitting. Not bad if you don't have a lathe.
As far as purging, my first thought was to make a "Y" set up and valves. One end connects to the Hydrostik, one to the compressed D2 bottle, and the third to the vacuum chamber or pump. Open the Hydrostik to vacuum to evacuate it, close off vacuum source, open regulator and fill Hydrostik.Rex Allers wrote:In the long run of trying to convert from H to D, I'm a bit concerned how hard it will be to purge the H and keep the D pure.