The Eppendorf 5308000003 ThermoTop cover provides temperature homogeneity within a thermoblock that is placed in a ThermoMixer model. The cover reduces the risk of contamination and prevents condensation formation on the tube lid and wall, optimizing reaction conditions and preventing the need for samples to be spun down at the end of incubation. An inductive signal transmission automatically detects the presence of the cover. The cover is compatible with ThermoMixer C, ThermoStat C, ThermoMixer F1.5, and ThermoMixer FP (sold separately).

Eppendorf manufactures instruments for cell manipulation and automated devices for liquid handling, for use in life science research laboratories. The company, found in 1945, is headquartered in Hamburg, Germany.