AlumaSeal CS sealing films are specially formulated 50 µm aluminum foil sealing films with a 50 µm layer of acrylic adhesive that withstands cold storage at temperatures to –80°C. AlumaSeal CS sealing films are not recommended for PCR or thermocycling. A single non-perforated end tab simplifies application. Simply hold the tab and strip the backing from the body of the sealing film as it lays on the plate to avoid curling.