PURPOSE: To prevent malfunctioning due to a noise, by a method wherein a data processor/analyzer is inserted between an analyzer, a host computer and the like as external device to apply an information impartment processing and a correction processing to an analysis data from the analyzer and a processing data obtained from the results is sent to the external device.

CONSTITUTION: It is judged by a data selection means 21 of a data analyzer/ processor 20 whether selection reference information is given or not in an analysis data signal from an analyzer 10. When no reference information is given, a specified selection reference information of an information input means 21a is inputted. An general analysis data signal selected and a control data signal are inputted separately to an information impartment processing means 22 and a correction factor computing means 23 and information from an external sample-wise input means 22a is imparted with the means 22. Correction information is imparted by the means 23, the analysis data signal, sample-wise data signal and the correction signal are processed by a correction processing means 24 and the data processed is sent out to an external device 30.