Product: Paraffin Sealing Film Size: 10cm x 38m Packing: 1 roll/pk Description: The Paraffin sealing film is a semi-transparent, flexible film composed of a blend of waxes and polyolefins. It is a ductile, malleable, non-toxic, edible, tasteless, odorless, and self-sealing thermoplastic. Its thickness is 125um. 1. It is waterproof and moisture-proof, which can effectively prevent the volatilization and contamination of experimental samples. 2. The sealing film can effectively protect anhydrous substances. 3. Single-layer sealing, oxygen-permeable and air-impermeable; multi-layer sealing, oxygen and air impermeable. 4. Glue-free and super malleable, it can be tightly wrapped on the surface of test tubes, flasks, and various irregular tools and objects. 5. Contains no organofluoride, more environmentally friendly, stable process, high elasticity, easy to use, and good wettability