Malfunctioning valves and seals are cleaned or replaced at the CAL-FCL. The CAL-FCL checks the correct functionig of the flasks comming for measurements.

Certain damages to the glass body of the flask can be repaired by the manufacturer for a fixed price per flask. However, no warranty on the success of the repair is given. After repair, the flasks will be checked by the manufacturer ans CAL-FCL to ensure that it still complies with the specifications.