ASTM D4772 Water Absorption Tester For Nonwoven And Towel Products Purpose: The water absorption of towels on skin, dishes and furniture surfaces is simulated in real life to test their water absorption, which is suitable for testing the water absorption of towels, face towels, square towels, bath towels, towel quilts and other towel products. Standards: ASTM D 4772 Standard Test Method for Surface Water Absorption of Towel Fabrics (Water Flow Test Method) GB/T 22799 Test