Abstract
It has been said that D. T. A. data are difficult to be used in quantitative analysis, because the delicacy in setting samples as well as measuring conditions and characterisitics of each apparatus affects the records seriously.
An extensive investigation by the author on sampling and heating ratio revealed that in the case of using a 24φmm nickel block sample holder in which two symmetric sample holes of 6 φmm were drilled, a reproducible quantitative D. T. A. was available by selecting the optimum sampling condition to each form of sample with the sample mass of about 100mg and the heating rate of 10°C/min.
