CELLTREAT Scientific Products Foil Sealing Film, Sterile. Foil Sealing Film reduces sample evaporation, can be pierced easily with pipet tips and automation, and is heat and cold resistant. Recommended for use between -80¿C and 120¿C. Manufactured from Aluminum Foil with Acrylic adhesive. Every case is printed with the lot number for quality traceability. Packaged sterile, 50/Re-sealable bag, 50/case.