... for customer’s request refrigeration:R507,R23,R508B etc.)Heating element to defrost available for optional.Transparent Acrylic Drum drying ... vacuum, condenser temperature, run time, ambient temperature. For water based samples, the -55C condenser is the perfect choice ... maximum performance.For labs that need quick turn-around, Heating element to defrost available.The SJIA-18N vertical top freeze ...