In the color latent image recorded under the content determination item, the retention time of the main peak of the test solution is consistent with that of the main peak of the reference solution.
The retention time of the main peak of the test solution is consistent with that of the reference solution in the color latent diagram recorded under the content measurement item
In the color potential diagram recorded under the content determination, the retention time of the main peak of the test solution is consistent with that of the reference solution.