Whatman Group manufactures Nylon Membranes for Filtering Aqueous Solutions. Whatman Group manufactures English mill making fine, handcrafted paper. The Nylon Membranes for Filtering Aqueous Solutions are suitable for use with a wide range of biological preparations and can be used where other membranes are unsuitable or difficult to use. Nylon membranes are hydrophilic, eliminating the need for wetting agents that could be extracted when filtering aqueous solutions. The membranes are flexible, durable and tear resistant, and can be autoclaved at 135° C.