Excel Scientific ZAF-PE-50, Zone-Free Sealing Film, Non-Sterile 70 µm, Polyethylene, 50 Films/Unit - 12-130 | Genesee Scientific Excel Scientific ZAF-PE-50, Zone-Free Sealing Film, Non-Sterile 70 µm, Polyethylene, 50 Films/Unit - 12-130 | Genesee Scientific