Apply consistent, secure, tight seals around individual wells, eliminating sample loss through evaporation and cross contamination between wells. The Thermo Scientific™ ALPS™ 50 V Microplate Heat Sealer is designed to provide sealing consistency in low to medium throughput labs. Heat sealing offers superior sample protection of storage and reaction plates in applications including compound storage, sample archiving and PCR. Choose from a wide range of heat seals — including pierceable, optically clear and permanent — for any application.