Excel Scientific SP2-RL-500, SealPlate RollMate Sealing Film, Non-Sterile For ELISA & Similar Assay, 500 Films/Unit - 12-167R | Genesee Scientific Excel Scientific SP2-RL-500, SealPlate RollMate Sealing Film, Non-Sterile For ELISA & Similar Assay, 500 Films/Unit - 12-167R | Genesee Scientific