INSTRUMENT FREQUENCY OF CALIBRATION
LIPPKE    Lippke-4000-4500-8x6cm-no-background-300dpi  12 months
LEAKMATIC  LeakMatic-II-15x25cm-fritlagt-300dpi  12 months, on site
LEAKPOINTER II  LeakPointer-II-5x6cm-nobackground-300  12 months, on site or at FFI