Compact, flexible and suitable for laboratory applications up to 200 bar and 300 °C
When scaling up chemical syntheses or testing severe reaction parameters, researchers often face a tough tradeoff: choosing between low-volume benchtop autoclaves that limit yield or expensive, highly complex pilot reactors that consume valuable floor space and budget.
The new maxiclave® high-pressure reactor system by Buchiglas (Büchi AG) bridges this gap. Engineered specifically for demanding high-pressure and high-temperature research, the maxiclave® brings 200 bar rating, 300 °C operation, and flexible 0.5 L and 1.0 L capacities to a compact benchtop setup.
Tailored for your workflow: key configurations
Whether your research involves simple liquid-phase reactions or complex, mass-transfer-limited gas-liquid syntheses, the maxiclave® system adapts to your experimental design without requiring separate reactor setups.
- Non-stirred maxiclave®: Ideal for static aging, material tests, and basic reactions where mixing can be handled via internal magnetic stir bars on a standard lab hot plate.
- Stirred maxiclave® drive: Powered by the integrated cyclone 075 dc magnetic stirrer drive (75 Ncm torque), providing dynamic, hermetically sealed agitation for hydrogenations, polymerizations, and gas-liquid reactions.
Dual configuration on a single base frame
Most competitive systems force you to buy entirely separate reactor bodies for static vs. stirred configurations. The maxiclave® uses identical, interchangeable 0.5 L and 1.0 L vessels for both the non-stirred and stirred drive setups.
Advantage: Start with an economical non-stirred unit and seamlessly upgrade to a full magnetic drive system as your project requirements expand.
Space-saving cyclone 075 dc magnetic drive
Rather than using bulky external motors connected via flexible shafts or belt drives, Buchiglas integrates the motor, speed controller, and high-torque magnetic coupling into a single compact housing.
Advantage: Offers 75 Ncm torque with zero shaft leak risks, digital speed monitoring, and a reduced footprint inside the fume hood.
Engineered for operator safety & ergonomics
Operating at 200 bar requires robust, heavy steel components. Büchi provides a dedicated ergonomic handling stand.
Advantage: Allows lab personnel to mount, open, and manipulate the cover plate and vessel smoothly, reducing physical strain and minimizing handling risks.
Multi-method heating & cooling (unjacketed versatility)
Instead of locking your lab into a fixed oil jacket or proprietary heating block, the maxiclave® vessel is unjacketed and compatible with:
- Standard laboratory hot plates
- High-performance electric heating sleeves
- Liquid bath thermostats (for operations down to -10 °C)
Advantage: Lowers total cost of ownership, speeds up thermal cycling, and simplifies maintenance.
Cost-effective corrosion control
In addition to solid Hastelloy® options, the maxiclave® supports drop-in, replaceable PTFE (Teflon) inserts.
Advantage: Run aggressive acids and halogenated reactions without committing to full exotic-alloy replacement vessels.
Primary Applications
Designed to handle both routine batching and advanced research, the maxiclave® excels in:
- Process scale-up: Bridging micro-scale screening (such as the 100–300 ML miniclave drive®) to pilot production.
- Gas-liquid reactions: Hydrogenation, carbonation, and gasification.
- Energy & sustainability research: Carbon Capture & Storage (CCS), biomass/biofuel conversion, and biopolymer synthesis.
- Specialty chemicals: API synthesis, crystallization, nanoparticle synthesis, and supercritical fluids (like CO2, etc.)
Upgrade your high-pressure capabilities
Whether you are designing a new process or optimizing existing scale-up parameters, the maxiclave® provides the Swiss precision engineering and safety standards required for demanding laboratory environments.
Interested in exploring custom vessel materials, gas dosing units, or technical configurations?
Contact our product specialists today to discuss your process requirements!