The gold-plated steel crucible 25 uL (fast) and 40 uL have proven highly effective in the field of safety investigations. However, they can only be used for one measurement each. The maximum pressure is 22 MPa.
The crucible lid is pressed into the crucible with the aid of a toggle press with a pressure of about a ton so that the rupture disk (Gold,Au 700/531) hermetically seals the crucible.