Maintenance
91
Pressure Buildup in Cells
If you are using stoppered cells, observe the following rules to prevent the buildup
of internal pressure that could cause the stopper to pop-out of the cell,
• Only fill the cell so full that the liquid meniscus is just above the radiation
beam. The remaining air space in the cell is then adequate to compensate for
any slight increase in pressure in the cell during routine operation.
• If, for analytical reasons, it is necessary to fill the cell completely, insert the
stopper only lightly so that the liquid in the cell has a chance to expand.
• Do not insert a stopper forcefully into a completely filled cell since this is
likely to cause the stopper to pop-out of the cell.
• When working at higher temperatures, use a drilled stopper (0.4 mm hole) to
allow for expansion in the cell.
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