Excel Scientific TSS-RTQS-50, ThermalSeal RTS Sealing Film, Sterile For qPCR, Optically Clear, 50 Films/Unit - 12-537S | Genesee Scientific Excel Scientific TSS-RTQS-50, ThermalSeal RTS Sealing Film, Sterile For qPCR, Optically Clear, 50 Films/Unit - 12-537S | Genesee Scientific