Patent ID: 7763468

Claim:
A sample analysis method comprising: a first step of confirming that a sample is supplied to an analytical tool based on output from the analytical tool; a second step of grasping a level of the output from the analytical tool in a predetermined time period after the supply of the sample to the analytical tool is confirmed, the grasping being performed at least once including at a time point when the predetermined time period has elapsed; and a third step of performing computation necessary for the analysis of the sample; wherein the grasping of the output from the analytical tool in the first step and the second step is performed based on output from a double integration circuit which is obtained by inputting the output from the analytical tool into the double integration circuit; wherein the first step comprises grasping a level of the output from the double integration circuit repetitively at a first sampling time interval defined by a time period from start of the inputting into the double integration circuit until completion of the outputting from the double integration circuit; and wherein, the second step comprises grasping a level of the output from the double integration circuit at a second sampling time interval defined by a time period from start of the inputting into the double integration circuit until completion of the outputting from the double integration circuit, the second sampling time interval being set longer than the first sampling time interval.