According to a survey by Kao(in Japanese), the amount of menstrual bleeding during menstruation, but also individual differences, in total menstrual blood loss during menstruation is 19 ~ 252g, and 82g has earned an average of the results.
About 30g per day(heavy flow).
Today, I have experimented with water how much the menstrual blood the CSN absorb.
The results are as below.
For regular → 13g(per sheet)
For heavy day → 20g(per sheet)
For night time → 35g(per sheet)
Therefore, this CSN has a high absorbency.