Parafilm M roll. Small piece of this film will seal test tubes, beakers, flasks, culture tubes, etc. Made of a semi-transparent, flexible and waterproof material. Resistant to most acids and alcohols yet is gas permeable. Measures 250-feet length by 2-inches width.

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 - Parafilm M laboratory film is an essential item in health care, pharmaceutical and research...