Leica CV Mounting Medium
     
The CV5030 mounting media bottle is difficult to open - why ?
FAQ Report
A:The mounting medium in the bottle is kept under pressure, which, combined with the viscosity of the mounting medium, may cause problems when attempting to open the bottle cap.

Always press the “Vent Bottle” button to de-pressurize the bottle to make it easier to open and always keep the mouth of the bottle clean from mounting medium.