IKA RCT Basic (Safety) Heating Magnetic Stirrer
| Brand | IKA |
|---|---|
| Origin | Germany |
| Model | RCT |
| Stirring Volume | 20 L |
| Heating Rate | 6 °C/min |
| Speed Range | 5–1,500 rpm |
| Temperature Range | Ambient to 310 °C |
| Max Stir Bar Size (L × Ø) | 80 × 10 mm |
| Temperature Setting Accuracy | ±1 °C |
| Speed Display | Digital |
| Adjustable Safety Temperature Limit | 50–360 °C |
Overview
The IKA RCT Basic (Safety) Heating Magnetic Stirrer is an engineered solution for precise, reproducible heating and mixing of laboratory samples under controlled thermal and mechanical conditions. Designed around the principle of contactless magnetic coupling—where a rotating permanent magnet beneath the ceramic-coated aluminum heating plate induces rotation in a magnetic stir bar immersed in the sample—the instrument delivers uniform agitation without mechanical shaft penetration, eliminating contamination risk and seal wear. Its integrated PTC heating element enables rapid, stable temperature ramping up to 310 °C, while the safety-focused architecture includes dual independent temperature monitoring circuits and programmable overtemperature cutoff to prevent thermal runaway. This configuration meets fundamental requirements for routine QC testing, synthesis scale-up trials, buffer preparation, and dissolution studies where thermal stability and mixing homogeneity are critical.
Key Features
- Robust ceramic-coated aluminum heating plate with high thermal conductivity and chemical resistance to common solvents and acids
- Dual-sensor temperature control system: one sensor regulates setpoint accuracy (±1 °C), the other serves as redundant safety cutoff
- Digitally adjustable safety temperature limit (50–360 °C), configurable independently from operating setpoint to enforce process boundaries
- Wide speed range (5–1,500 rpm) with closed-loop motor feedback for consistent torque delivery—even at low speeds or high viscosity
- Optimized magnetic field geometry supporting stir bars up to 80 mm length × 10 mm diameter, enabling efficient mixing in vessels up to 20 L capacity
- Heating rate of 6 °C/min (measured in 1 L water, open beaker) ensures time-efficient thermal equilibration without overshoot
- IP21-rated enclosure with thermal insulation and vented housing design for safe continuous operation at elevated temperatures
Sample Compatibility & Compliance
The RCT Basic accommodates standard laboratory glassware including round-bottom flasks, beakers, and jacketed reactors (with appropriate adapter support). Its non-reactive ceramic surface resists corrosion from aqueous, organic, and mildly acidic media. From a regulatory standpoint, the device supports GLP-compliant workflows through traceable parameter setting and stable thermal performance. While not certified for FDA 21 CFR Part 11 compliance out-of-the-box, its digital interface and locked parameter settings enable integration into validated environments when paired with documented SOPs and audit trail protocols. The unit conforms to IEC 61010-1:2010 for electrical safety in laboratory equipment and carries CE marking per EU Directive 2014/30/EU (EMC) and 2014/35/EU (LVD).
Software & Data Management
The RCT Basic operates via front-panel push-button controls with LED-based digital display for real-time readout of speed (rpm) and temperature (°C). It does not feature USB, Bluetooth, or PC connectivity—intentionally designed for standalone, intuitive operation in teaching labs, production QC, and resource-constrained environments. All settings—including safety limit—are retained after power cycling. For laboratories requiring data capture, optional external loggers (e.g., calibrated thermocouple + data acquisition modules) may be deployed to record temperature profiles and stirring duration, satisfying internal quality records requirements per ISO/IEC 17025 clause 7.7.
Applications
- Preparation of homogeneous buffers, reagents, and calibration standards across pharmaceutical, environmental, and academic labs
- Controlled heating and mixing during crystallization trials, polymer dissolution, and catalyst activation procedures
- Support of ASTM D2196 (viscosity of non-Newtonian materials) and USP (dissolution apparatus qualification) auxiliary steps
- Routine maintenance of microbial culture media and enzymatic reaction mixtures requiring gentle yet consistent agitation
- Teaching applications in undergraduate chemistry and chemical engineering curricula emphasizing thermal kinetics and mass transfer fundamentals
FAQ
Does the RCT Basic support external temperature probe input?
No—it relies exclusively on the built-in PT100 sensor embedded in the heating plate. External probe integration is available only on higher-tier models (e.g., RCT digital or RET cordless series).
Can it maintain temperature stability at 300 °C for extended periods?
Yes—under no-load conditions or with low-thermal-mass vessels, the unit sustains ±2 °C stability at 300 °C for >8 hours; actual drift depends on ambient airflow, vessel geometry, and sample thermal mass.
Is the stirrer compatible with stainless steel or PTFE-coated stir bars?
It is optimized for standard PTFE- or glass-coated magnetic stir bars; uncoated stainless steel bars may corrode or demagnetize above 250 °C and are not recommended.
What safety certifications does the RCT Basic carry?
CE marking per Low Voltage Directive (2014/35/EU) and Electromagnetic Compatibility Directive (2014/30/EU); compliant with IEC 61010-1:2010 for laboratory electrical safety.
How often should the unit undergo preventive maintenance?
Annual visual inspection of ceramic surface integrity and verification of safety cutoff function using calibrated reference thermometer is recommended per IKA service guidelines.
