Excel Scientific 100-THER-PLT, ThermalSeal PCR Sealing Film, Non-Sterile 50µm, Polypropylene, 100 Films/Unit - 12-168 | Genesee Scientific Excel Scientific 100-THER-PLT, ThermalSeal PCR Sealing Film, Non-Sterile 50µm, Polypropylene, 100 Films/Unit - 12-168 | Genesee Scientific