the stomach-contents of a...
CPD (Critical Point Dryer). Note the bursting disc (blue arrow) ensures safety, if the pressure passes the limit. I had the pleasure once to see it in full action and I'm not especially keen on making the experience again: the explosion made the machine jump up from the table but interestingly, my samples remained unharmed. I later produced some of my finest images ever... !!
Labels:
bursting disc,
CPD,
gas valve,
stomach contents