3L Small Jacketed Glass Reactor

1. What is it?

The small jacketed glass reactor — also known as double layer jacketed glass reactor — is a compact, high-precision temperature-controlled stirred vessel designed for laboratory-scale chemical synthesis, pharmaceutical development, and fine chemical experiments. This 3L model features a 3L material capacity inner vessel made of high-borosilicate glass, with a 2L mezzanine jacket for efficient heating/cooling circulation. It supports precise temperature management, variable-speed stirring, and modular setups, making it ideal for a wide range of reactions including vacuum, reflux, and multi-step processes.

2. What problems does it solve for you?

In R&D, the biggest frustrations often aren’t whether a reaction can be done, but whether you can see it clearly, control it safely, test it quickly, repeat it reliably, and do it affordably. This small jacketed glass reactor is built precisely to address these real-world pain points:

1. You can actually “see” and control what’s happening Are bubbles forming? Is crystallization starting? Is a side reaction occurring? The 360° transparent high-borosilicate glass vessel lets you observe phase changes, color shifts, crystal formation, precipitation, or layering in real time. For researchers, this visibility is the single most powerful way to reduce blind trial-and-error and make faster, more confident decisions.
2. Safe handling of highly corrosive systems Strong acids, bases, halogens, and aggressive organic solvents quickly corrode metal reactors — and stainless steel can introduce metal ion contamination that ruins purity. With high-borosilicate glass + PTFE contact surfaces, this reactor offers strong chemical inertness and no metal leaching. It’s particularly ideal for pharmaceutical intermediates, fine chemicals, and materials R&D where purity is non-negotiable.
3. Fast small-scale testing & process screening Is the new route feasible? Where is the operating window? Which conditions give the best yield? Quick assembly, low cost to switch reaction systems, and high flexibility make it perfect for exploratory small-scale runs, condition screening, and route comparison. It’s the ideal tool for the critical “from 0 to 1” stage of discovery and early development.
4. Precise temperature control for better reproducibility Exothermic/endothermic reactions often cause temperature swings, ruining reproducibility and making data unreliable. The double-layer jacket structure, paired with a recirculating chiller/heater, delivers stable constant temperature and controlled gradient heating/cooling. This is especially valuable for reactions that are highly sensitive to temperature windows, such as crystallization or selective transformations.
5. Significantly lower overall R&D costs Jumping straight to high-pressure stainless steel reactors is expensive and risky; many labs hesitate to use glass due to perceived fragility or pressure limitations. This jacketed glass reactor offers much lower equipment cost than stainless steel alternatives, simple maintenance, and safe operation in non-explosive environments (when properly configured). For budget-conscious R&D teams running frequent experiments, it delivers exceptional value without compromising performance.

In short: It lets you see more clearly, work more safely, test faster, repeat more reliably, and spend much less — so your time and budget go toward real innovation, not endless troubleshooting or over-engineered equipment.

3. What are the product features?

• Optimized capacity & thermal control — 3L material capacity + 2L mezzanine jacket for excellent heating/cooling efficiency and uniform temperature distribution
• Wide temperature range — -120°C to +300°C, suitable for cryogenic reactions, high-temperature synthesis, and everything in between
• High chemical resistance — Fluorine-coated stainless steel stirring paddle withstands aggressive acids, bases, and organic solvents
• Powerful & adjustable stirring — 0–1350 rpm stepless speed control with smooth gimbal shaft connection for low-vibration, uniform mixing
• Flexible multi-port design — 5 customizable ports support dropping funnels (500 ml constant pressure funnel), sensors, sampling, vacuum lines, reflux condensers, and more
• Precise monitoring — PT100 temperature probe for real-time, accurate thermal feedback
• Safety upgrades — Optional explosion-proof motor and control box for hazardous environments
• Enhanced stability & visibility — Compact small design ensures excellent mechanical stability and clear observation of reactions
• Easy maintenance options — Optional insulated jacket/cover and spray cleaning device for reduced heat loss, condensation control, and quick cleanup

Compatible Equipment Suggestions

• Recirculating Chiller — Provides precise jacket temperature control for exothermic/endothermic reactions.
• Vacuum Pump — Enables vacuum distillation, solvent recovery, and low-pressure reactions.
• Temperature Controller — Ensures stable long-term temperature maintenance.
• Condenser Setup — Supports efficient reflux and organic synthesis operations.
• Magnetic Stirrer Support — Enhances mixing uniformity in parallel or continuous setups.

Demo Video & More Options

See the full installation, temperature control, stirring, feeding, and cleaning process in action: Watch product operation demo video

Looking for other volumes or configurations? Browse the complete Jacketed Glass Reactor Series — including 1L, 2L, 5L, 10L and more.

Need custom port layout, specialized stirring paddle, explosion-proof rating, or other modifications? Contact us for professional recommendations and quotations.