An improvement on existing 96-Well systems, the Multi-Tier™ Plate is a patented modular, reusable system featuring a base plate capable of securing 0.5mL, 1.0mL, 1.5mL, 2.0mL or 2.5mL conical glass, flat bottom & polypropylene vials. The vented design of the base plate assures uniform heating and cooling when immersed in a water bath.