CELLTREAT Scientific Products Foil Sealing Film, Non-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 Non-sterile, 100/Re-sealable bag, 100/case.