20 L sub-zero refrigerated circulator with ±0.01 °C precision, color LCD touchscreen, built-in refrigeration, rear drain valve, and high-flow pump—perfect for QA labs, sample prep, and cold-environment testing.
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The PolyScience AD20R‑30‑A11B delivers high-precision sub-zero performance in a compact, lab-friendly 20 L heated circulator. With its efficient refrigeration system and responsive color LCD touchscreen, it maintains ±0.01 °C stability across −30 °C to +30 °C.
Featuring a stainless-steel reservoir equipped with insulated lid and rear drain, this unit supports continuous circulation (~20 L/min) and easy cleaning. It includes comprehensive safety protections – low-liquid and over-temperature shutdown – keeping samples safe. Ideal for QA workflows, viscosity testing, material research, and sample conditioning in tightly controlled cold environments.
Key Features
Specifications Table
| Feature | Specification |
|---|---|
| Reservoir Volume | 20 L stainless steel |
| Temperature Range | −30 °C to +30 °C |
| Stability | ±0.01 °C |
| Circulation Flow | Approx. 20 L/min |
| Cooling System | Internal refrigeration |
| Display | Color LCD touchscreen |
| Drain Valve | Rear-mounted |
| Safety Features | Low-liquid & over-temp shutdown |
| Weight (empty/full) | ~90 lb / ~140 lb (41 kg / 64 kg) |
