Precise cooling enhances electrophoresis separations. A new high-performance circulator from PolyScience, the Advanced Digital Refrigerating Circulator or AD07R-20, is compact, easy-to-use and combines touch-pad operation with automatic or user-adjustable fluid optimization and ±0.1°C temperature stability to maintain buffer solutions at optimum temperatures even under varying electrophoresis voltages. It features a -20°C to 200°C working temperature range, a 3.75-in. display and variable-speed pressure-suction pump. It also incorporates a rotating control head that provides a clear view of the temperature display anywhere within a 180°C radius, self-storing reservoir cover, and a top plate that dampens noise and remains cooler at higher temperatures. PolyScience
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