Lonza uses high quality proprietary film for the construction of its Platinum UltraPAK Products offering which represents state-of-the-art packaging for cell culture media and related products In the rapid developing Biotechnology field new processes and procedures are developing that require the packaging of sterile liquid media ad reagents in bulk flexible container systems Platinum UltraPAK Film consist of a two-web design with both layers being made completely of non-animal origin (NAO) material Platinum UltraPAK layers are comprised of an inner contact and an outer support layer The inner product contact layer is comprised of high-quality low density polyethylene providing flexibility and a full NAO environment The outer film layer is comprised of nylon and polyethylene which provides strength and acts as an excellent gas transmission barrier between the product and the environment