Keep moisture loss to a minimum and protect the contents of your laboratory items with a flexible covering sealing film for test tubes, beakers, petri dishes and more. Convenient, flexible and self-sealing - Para film M laboratory film is an essential item in health care, pharmaceutical and research labs. Efficient and cost-effective covering for: Test tubes, Beakers, Vials, Petri dishes, Flasks, Various other instruments and objects with irregular surfaces, Overwrap to further secure stoppers, lids and caps, and Shelf or tray liner to prevent slipping of bottles or instruments.