Absorbing capacity 4,8 – 5 lt/m? The test liquid is pure water, not tap water nor artificial urine, because the tap water and artificial urine are different from country to country, but pure water is quite alike among countries. Test Method explanation weight the pad, then immerse the pad in water for 3 minutes, get it out and hang for 5 minutes, weight the pad again, calculate how much water the pad absorbs (1g equals 1ml).