Do you often observe many people testing the water absorption capacity of diapers? Many businesses frequently pour a large amount of pure water onto the diaper to assess the strength of their product's water absorption capacity. However, this method is not scientifically accurate because the superabsorbent polymer (SAP) inside the diaper has different absorption capacities for saltwater and pure water. Since the composition of a baby's urine is closer to normal saline, it is more appropriate to test the diaper's water absorption capacity using saline solution. Business colleagues, have you taken note?