Inject the reference solution into the gas chromatograph, and continuously inject 6 samples. The relative standard deviations of the peak areas of ethanol and chloroform are not greater than 15%.
Take the reference solution and inject it into the gas chromatograph. Inject 6 consecutive injections, and the relative standard deviation of the peak areas of ethanol and chloroform shall not exceed 15%.
Inject the reference solution into the gas chromatograph, and inject 6 needles continuously. The relative standard deviation of the peak areas of ethanol and chloroform is not more than 15%.