An interlaboratory measurement of screen-film speed and average gradient according to ISO 9236-1.
The speed and average gradient of a conventional screen-film system was measured at four European laboratories. This is the first interlaboratory comparison in which the measurement conditions described in ISO 9236-1 were applied. The four laboratories used calibrated measurement equipment. The values obtained by the four laboratories were within a range of 14% for the speed and within a range of 8% for the average gradient. These variations are consistent with the expected measurement uncertainty.
Buhr
E
E
Physikalisch-Technische Bundesanstalt, Braunschweig, Germany. egbert.buhr@ptb.de
Bergmann
D
D
Hoeschen
D
D
Ailliet
M
M
Sirand-Rey
G
G
Gazzola
C
C
Uras
S
S
D002138:Calibration; D005060:Europe; D007753:Laboratories / Q000592:standards; D011786:Quality Control; D015203:Reproducibility of Results; D014962:X-Ray Film / Q000592:standards*