ThermalSeal® A™ is a 2 mil (50um) heat-resistant polypropylene film designed for thermal cycling applications. ThermalSeal® A™ films are now produced with a slightly stronger adhesive than the original product for better adherence to plates. Each film measures 3.083 x 4.65 inches and offers sufficient sealing area for all PCR plates. Certified DNase, RNase and nucleic acid free.

ThermalSeal® films are not pierceable. For applications where piercing with pipet tips or robotic probes is required for product recovery, see AlumaSeal II™ films. For real-time PCR applications where maximum optical clarity is required, see ThermalSeal RT and RTS.