  Jug of Polibar barium sulfate.  
This is an empty jug of Liquid Polibar brand barium sulfate for medical imaging purposes.  Basically it's opaque to x-rays, so if you put it into some part of the body, say the intestine, you can tell the exact shape it takes on with a simple x-ray. 
Filling the intestine is done from both ends, and I'm not sure which end this solution is meant to go in. Hopefully the doctor knows. 
Source: Dr Chung 
Contributor: Dr Chung 
Acquired: 8 February, 2009 
Text Updated: 8 February, 2009 
Price: Donated 
Size: 10" 
Composition: BaSO4
 |  
  |  
 |  
  |