Julabo SD07R-20-A11B Recirculating Chiller/Heater for Laboratory Temperature Control (7 L Capacity)

The Polyscience 7 L Refrigerated Circulator is engineered for precise temperature control across a broad range of laboratory and industrial applications.

Scientific evaluations of circulating baths like this model highlight their ability to maintain tight temperature stability — often within ±0.005 °C — which is critical for experiments requiring exact thermal conditions.

Reviews from industry suppliers note its intuitive control interface and robust construction, with multiple controller options available for advanced programmability and external connectivity. Users commonly employ this equipment in research labs, quality control processes, and industrial testing with feedback emphasizing its durability, reliability, and versatility for both cooling and heating cycles.

Product Overview

The Polyscience 7 L Refrigerated Circulator operates over a wide temperature span from approximately −20 °C to 170 °C with a standard digital temperature controller that makes operation straightforward and maintenance minimal.This model is designed to support precise thermal regulation in a compact form factor, suitable for both internal and external fluid circulation.

Key Features

• Compact, space‑saving design ideal for laboratory benchtops
• Large touch‑pad LCD screen with English and universal icons for easy navigation
• Variable speed pressure pump meets differing circulation needs
• Swivel 180° rotating controller for flexible viewing angles
• On‑screen prompts and automated performance optimization improve usability
• Single‑point calibration capability supports measurement accuracy
• Stainless steel construction enhances long‑term durability
• Protective reservoir cover along with DuraTop and LidDock accessories
• Cleanable air filter helps reduce contamination risks
• Advanced safety features including over‑temperature protection and low liquid level shutdown
• Maximum pressure around 3.5 psi (0.24 bar) for suitable fluid flow

Design and Usability

This refrigerated circulator model incorporates a thoughtfully engineered layout with a user‑friendly digital display that assists in setting and monitoring temperature parameters. The swivel controller allows adjustment of display orientation, making operation accessible from varied positions around the device.

Performance and Control

Temperature control is both precise and stable, with performance characteristics designed to support critical cooling and heating tasks. The integrated pump system provides dependable circulation, while automatic features optimize performance based on set‑point and environmental conditions.

Durability and Protection

Robust stainless steel construction and protective design elements like the reservoir cover, DuraTop, and LidDock increase resistance to wear and contamination. Built‑in safety controls — including over‑temperature protection and low liquid level cutoff — guard against common operational hazards.

Specifications

• Working temperature range: approximately −20 °C to 170 °C
• Bath volume: 7 L (1.85 gal)
• Temperature stability: ±0.005 °C (model‑specific)
• Stainless steel reservoir
• Standard digital controller with large LCD
• External circulation capability
• Protective safety features included

Compatible Models

• – Space‑saving 7 L model with standard MX controller
•  – Advanced digital controller option
• – Extended low‑temperature range version
• – Standard digital low‑profile variant
• – Advanced programmable controller variant

Users often complement a core circulator with additional systems tailored to varied volume and performance requirements.

For larger capacity needs, the Refrigerated Circulator 15 Liter, -30°C delivers enhanced cooling range and stability for conditioning baths or external circulation applications with robust performance and intuitive controls. Where broader range control and higher throughput are desired, the Refrigerated Circulator 20 Liter, -30°C offers expanded reservoir volume and advanced temperature consistency to handle demanding process environments. For extended configurability across flow and temperature limits in compact footprints, the Heating and Cooling Circulating Bath - MX15R‑30 integrates precision cooled and heated bath capability with programmable set‑points for complex testing and validation protocols.

Applications

Refrigerated circulators like this are widely used in laboratory temperature control, chemical stability testing, materials analysis, and environmental simulation chambers. Their precise control and reliability make them suitable for experiments demanding consistent thermal conditions and for industrial quality control processes.

Q&A

What temperature range does this 7 L refrigerated circulator support?

This model typically provides reliable temperature control from about −20 °C up to ~170 °C, depending on specific version and controller type. 

Can this circulator be used for external fluid circulation?

Yes, external circulation is supported, allowing the bath to regulate temperature in connected systems or external equipment. 

Is the controller easy to operate?

The large LCD interface with universal icons and prompts is designed to simplify operation, and selectable controller types like advanced digital or programmable further enhance usability. 

What safety features are included?

Standard safety features such as over‑temperature protection and low liquid level shutdown help prevent damage or unsafe conditions during use.