Method for calibrating densitometer of cataphoretic apparatus and calibration film for use in such calibrating method

摘要

In a method for calibrating or checking a densitometer section of a cataphoretic apparatus use is made of a calibration film comprising a transparent and flexible sheet and a pattern applied on the sheet and having a known density and the calibration film is fed into the densitomater with the aid of a mechanism for feeding usual sample bearing films. After the calibration for the densitometer has been completed using the introduced calibration film the film is discharged out of the densitometer with the aid of a mechanism for discharging the usual sample bearing films.