This laboratory chiller circulator is designed for precise cooling in daily lab applications with a 3.4 L tank and both internal and external circulation modes. It offers temperature control from -20℃ to room temperature with 0.01℃ resolution for stable, repeatable results. The unit is built with a 304 stainless steel tank and top, an electrostatic-coated shell, and a hermetic compressor for durable performance. Its compact design, LCD display, and wide tank opening help streamline setup, operation, and cleaning. It is suitable for biochemical, industrial, and scientific cooling tasks, including use with rotary evaporators up to 2 L.