Contamination of Pantopaque by glass.

Investigation has shown that when ampules containing Pantopaque are opened, a variable amount of fragments of glass may fall into the Pantopaque. When the Pantopaque is injected into the spinal canal these fragments may also be injected. As yet the results of injecting fragments of glass into the spinal subarachnoid space are unknown. The glass can be removed by passing the Pantopaque through a 0.22 micron Millex Filter.