Ahlstrom Filter Paper 5.5"×12" 奧斯龍5.5×12英寸（140×275 mm）濾紙（吸水紙或吸墨紙）
It is often used to test the overflow (slippage or slippage) of hydrophilic nonwoven fabrics (non-woven fabrics). It is the designated test consumable for EDANA, such as the performance test of the skin contact layer of diapers.
