Parafilm M Lab Film Double Sized Roll 4 in. x 250 ft

Parafilm PM999 M Lab Film Double Sized Roll is a versatile and essential laboratory supply ideal for a wide range of applications requiring a flexible, self-sealing barrier. This double-sized roll measures 4 inches in width and 250 feet in length, providing a substantial amount of film for various laboratory needs. A key characteristic of Parafilm M is its remarkable elasticity, capable of stretching up to 70%, which allows it to conform tightly around irregular shapes and surfaces, creating a secure seal. This property makes it invaluable for sealing flasks, test tubes, petri dishes, and other labware to prevent evaporation, contamination, and spills.

Parafilm M is commonly used for covering beakers and other open containers, as well as for lining trays or creating temporary seals. Its flexibility, self-sealing nature, and resistance to many common laboratory chemicals make Parafilm PM999 a staple in biological, chemical, and clinical laboratories.