이는 Table 1에서 제시된 20℃ 혼합 비율에 의거하되 증류수에 해당하는 0% 농도를 추가하여 9가지 용액을 20 ml 씩 제조하였다.
This was based on the 20℃ mixing ratio shown in Table 1, but by adding 0% concentration corresponding to distilled water, 9 different solutions were prepared by 20 mL.