too much iso + wand hash = bottle explosion Just thought I'd report what happened this weekend with my bottle of iso reclaim. It was as dark brown glass bottle, filled to the brim with dark iso rich with reclaim from weeks of cleaning my oil rigs as well as a deep clean of 6-8 months worth of wand hash. The iso was saturated with oil and viscous. So I dropped in about a gram of old wand hash that I'd found in my draw. The bottle was full already, and adding this caused some to overflow, sticking to my hands and making the bottle sticky. I ignored this and re-screwed on the lid whilst I let the wand hash dissolve. Big mistake. I glanced out of the window and saw glimpse of a bird of prey, so I moved to the window for a better look. I had been standing there for maybe a minute watching the buzzards when all of a sudden the glass bottle in my hand exploded, firing shards of glass and spilling my dark oil laden iso everywhere- on the window, the windowsill, down the wall and in a puddle on the floor, as well as splattering all down the front of my clothing. A sticky mess. Not sure exactly what happened. I expect that the wand hash was dissolving in the iso and perhaps also releasing some gas. Or maybe thermal expansion due to the heat in my hand? but this latter suggestion seems unlikely- the change to my palm temperature is not great and would have taken longer, and I doubt it could have caused the pressure build up required. Or wand hash is of much greater volume as a liquid than as a solid lump. I don't know. Gutted that I lost a lot of reclaim- I fully expected to have 3-5g or more after evaporation- but lucky that none of the glass found its way through my skin. So I think that the moral of the story for me is to leave a significant air gap at the top of any bottle in which I'm conducting such procedures, and to leave off the lid until it's all dissolved. Now upon reflection I expect it's standard procedure when bottling things to always leave an air gap rather than filling right to the brim. I didn't really know that, though it's obvious.