MakeWave MKJ-J1N Laboratory Microwave Reactor
| Brand | MakeWave |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Model | MKJ-J1N |
| Temperature Range | 0–300 °C |
| Pressure Rating | Atmospheric (Ambient Pressure) |
| Microwave Output Power | 800 W (Continuous, Non-pulsed) |
| Frequency | 2450 MHz |
| Stirring Method | Mechanical Stirring (PTFE Anchor Stirrer) / Optional Magnetic Stirring |
| Cavity Volume | ~18 L |
| Safety Leakage | <5 mW/cm² |
| Power Supply | 220 VAC, 50 Hz |
| Total Power Consumption | 1300 W |
| Weight | 40 kg |
| Compliance | ISO 9001 Certified |
Overview
The MakeWave MKJ-J1N Laboratory Microwave Reactor is an entry-level, open-system microwave platform engineered for controlled thermal processing and exploratory microwave-assisted synthesis under ambient pressure conditions. Unlike sealed-vessel high-pressure microwave synthesizers, the MKJ-J1N operates on a modified domestic microwave architecture—optimized for pedagogical use, method development, and low-complexity reaction screening where precise atmospheric-temperature control and process observability are prioritized over extreme pressure or rapid kinetic acceleration. Its core heating mechanism relies on dielectric loss coupling at 2450 MHz, enabling volumetric energy deposition into polar solvents and materials. The system supports both physical processes—including drying, solvent evaporation, and thermal conditioning—and chemical applications such as catalytic condensation, hydrolysis, polymerization initiation, and solid-state decomposition. Designed for reproducibility in non-GMP academic and industrial R&D labs, it integrates contact-based thermocouple monitoring, linear power modulation, and real-time visual process observation through a shielded borosilicate viewport.
Key Features
- Continuous, non-pulsed 800 W microwave output with analog power regulation (0–100% linear adjustment), enabling stable thermal ramping without duty-cycle artifacts.
- Robust stainless-steel cavity (~18 L internal volume) with λ/4 choke joint door sealing, certified to emit <5 mW/cm² microwave leakage—exceeding IEC 61000-3-2 and GB 4706.21 safety limits.
- Insertable K-type thermocouple with direct-contact measurement, supporting temperature feedback control across 0–300 °C range—calibrated for glassware-compatible thermal profiles.
- Dual stirring capability: motor-driven PTFE anchor stirrer (speed-adjustable) for viscous media; optional magnetic stir plate integration for low-viscosity reactions.
- Top-mounted process port (Φ30 mm) enables insertion of reflux condensers, gas inlets, sampling probes, or inert atmosphere lines—facilitating open-flask chemistry in standard 500 mL three-neck round-bottom flasks.
- Integrated safety interlocks: hardware-enforced power cutoff upon door opening, redundant door-latch sensing, and thermal cutout protection.
Sample Compatibility & Compliance
The MKJ-J1N accommodates standard borosilicate glassware (e.g., 500 mL three-neck flasks) and compatible ceramic or quartz vessels rated for ≤300 °C continuous operation. It is not designed for sealed high-pressure reactions or volatile solvent systems requiring explosion-proof containment. The system complies with ISO 9001:2015 quality management standards and meets electromagnetic compatibility (EMC) and radiation safety requirements per national and regional directives (GB 4706.21, IEC 60335-2-90). While not validated for GLP or FDA 21 CFR Part 11 environments, its analog control architecture and manual data logging support traceable documentation in non-regulated research workflows.
Software & Data Management
The MKJ-J1N employs a microcontroller-based embedded control system with front-panel membrane keypad interface. Temperature, power level, and time duration are set manually and displayed via LED indicators. No proprietary software or PC connectivity is included; however, external data loggers may interface with the thermocouple output (mV signal) and relay-triggered timer outputs for third-party acquisition. All operational parameters—including elapsed time, setpoint temperature, and actual cavity temperature—are retained locally during runtime but not stored post-cycle. For audit-ready environments, users are advised to implement external video recording or manual logbook entries aligned with institutional SOPs.
Applications
- Teaching laboratories: Demonstrating microwave dielectric heating principles, Arrhenius kinetics comparison, and solvent-free reactions.
- Materials science: Thermal curing of resins, pre-sintering of metal-organic frameworks (MOFs), and controlled dehydration of hygroscopic precursors.
- Organic synthesis: Solvent-mediated esterifications, Suzuki couplings under air, and acid-catalyzed cyclizations using conventional reflux setups.
- Environmental analysis: Rapid moisture content determination in soils, sludges, and biomass samples prior to gravimetric or chromatographic analysis.
- Food & agriculture R&D: Low-temperature enzymatic inactivation studies and gentle extraction optimization without thermal degradation.
FAQ
Can the MKJ-J1N be used for high-pressure microwave synthesis?
No. It is strictly an atmospheric-pressure system with no pressure-rated vessel or safety interlock for pressurized operation.
Is the thermocouple compatible with corrosive reagents?
The standard K-type thermocouple sheath is stainless steel (316SS); for highly acidic or halogenated media, users must verify chemical compatibility or employ protective ceramic sleeves.
Does the unit support inert gas purging?
Yes—via the top process port; users must supply external nitrogen/argon flow control and appropriate tubing/fittings.
What is the maximum recommended flask size?
500 mL three-neck round-bottom flasks are validated; larger vessels may impede uniform field distribution and reduce thermal efficiency.
Is calibration documentation provided?
Factory calibration certificates for temperature sensor and power output are available upon request, traceable to national metrology institutes.
