Thermo Scientific HM 550 Cryostats are high quality and versatile cryostats designed for clinical or research applications. The new cold disinfection option on the Thermo Scientific HM 550 cryostat allows fast, safe and complete disinfection of the cryostat chamber without interrupting workflow. The patented disinfection system fumigates the cryochamber at standard operating temperature; no warmup is required. The fumigant circulates throughout all areas of the cryochamber without leaving untreated shadows as with UV disinfection. It is deadly to pathogens but completely safe to users.