Excel Scientific STR-THER-PLT, ThermalSeal PCR Sealing Film, Sterile 50µm, Polypropylene, 100 Films/Unit - 12-532 | Genesee Scientific Excel Scientific STR-THER-PLT, ThermalSeal PCR Sealing Film, Sterile 50µm, Polypropylene, 100 Films/Unit - 12-532 | Genesee Scientific