Answer
Soluprick Positive Control (histamine dihydrochloride) contains 2 ml of solution in a clear type I glass vial closed with a bromobutyl rubber stopper and a propylene screw cap.
Sources for this answer
- Soluprick ControlsALK-Abello Ltd · emc · SmPC §6.5 Nature and contents of container · Version 3Document updated
Sources checked