Danish-engineered cooling and cryo baths reaching -30°C, -50°C or -90°C, in 8 or 18-liter sizes with 600–1200 W cooling capacity. Paired with Safety Class 3 controller-circulators (2000 or 4000 series) offering adjustable temperature setpoints, over-temperature protection and a 17 L/min pump at 350 mbar for external circulation — the 4000 series adds computer-controlled rate heating/cooling. Compatible with legacy Heto-model retrofits.