JingHong LQZ-211 Floor-Standing Full-Temperature Orbital Shaker
| Brand | JingHong |
|---|---|
| Origin | Shanghai, China |
| Model | LQZ-211 |
| Timer Range | 0–99.9 h |
| Oscillation Frequency | 30–280 rpm |
| Orbit Diameter | 30 mm |
| Temperature Range | 5–50 °C |
| Shelf Configuration | Single-tier platform |
| Instrument Type | Air-jacketed恒温振荡器 (Air-Bath Constant-Temperature Shaker) |
| Capacity | Up to 32 × 250 mL flasks or 4 × 3000 mL Erlenmeyer flasks |
Overview
The JingHong LQZ-211 Floor-Standing Full-Temperature Orbital Shaker is an integrated air-bath incubator shaker engineered for precise temperature-controlled agitation in life science and bioprocessing laboratories. It operates on the principle of orbital shaking—generating uniform circular motion with a fixed 30 mm orbit diameter—to ensure homogeneous suspension, aeration, and mixing of microbial cultures, cell suspensions, and biochemical reaction mixtures. Unlike benchtop units, the LQZ-211 features a floor-standing architecture with reinforced steel frame construction, optimized thermal distribution via forced-air circulation, and a large-volume chamber capable of accommodating up to four 3000 mL Erlenmeyer flasks or thirty-two 250 mL vessels simultaneously. Its operational temperature range spans from 5 °C (refrigerated ambient) to 50 °C, enabling applications ranging from psychrophilic bacterial cultivation to thermophilic enzyme assays—without requiring external cooling or heating accessories.
Key Features
- Integrated dual-function design: Combines precision temperature control (±0.3 °C stability at setpoint) with digitally regulated orbital agitation—eliminating the need for separate incubators and shakers.
- Microprocessor-based PID temperature controller with dual digital display: Simultaneously shows setpoint and real-time chamber temperature; supports auto-tuning for rapid thermal equilibration and long-term drift compensation.
- Brushless DC motor drive system: Delivers consistent oscillation across the full 30–280 rpm range with <±1 rpm speed accuracy and minimal torque fluctuation—even under variable load conditions.
- Full-glass observation door with gas-spring assisted lift mechanism and foot-operated release: Enables hands-free access during high-throughput workflows while maintaining thermal integrity and minimizing operator fatigue.
- Robust single-tier stainless-steel platform with non-slip silicone matting: Designed for secure placement of flasks, tubes, and multi-well plates; compatible with standard clamping systems for universal vessel retention.
Sample Compatibility & Compliance
The LQZ-211 accommodates diverse sample formats including glass and plastic Erlenmeyer flasks (up to 3000 mL), test tubes, Petri dishes, and deep-well microplates. Its chamber dimensions (W×D×H: 650 × 580 × 520 mm) support stacked configurations when used with optional multi-tier adapters (sold separately). The unit complies with IEC 61000-6-3 (EMC emissions) and IEC 61010-1 (safety requirements for laboratory equipment). While not certified to ISO/IEC 17025 or FDA 21 CFR Part 11 out-of-the-box, its digital logging capability (via optional RS-485 interface) enables traceable data capture suitable for GLP-compliant environments when paired with validated third-party software.
Software & Data Management
The onboard controller stores up to 10 user-defined protocols—including temperature ramping profiles, stepwise frequency changes, and timed start/stop sequences—with non-volatile memory retention. An optional RS-485 serial port supports bidirectional communication with PC-based monitoring platforms (e.g., LabVIEW or custom Python scripts) for remote parameter adjustment, real-time telemetry, and automated CSV export. Audit trails—including operator ID, timestamp, setpoint history, and alarm events—can be generated upon request for internal quality documentation, aligning with basic GxP record-keeping expectations.
Applications
- Bacterial and yeast culture expansion under controlled aeration and thermal conditions (e.g., E. coli expression studies at 37 °C, Saccharomyces cerevisiae fermentation at 30 °C).
- Cell line maintenance in suspension culture (CHO, HEK293) requiring gentle yet consistent mixing to prevent sedimentation and hypoxia.
- Enzyme kinetics assays where temperature-sensitive reaction rates must be evaluated across gradients (e.g., 15–45 °C screening).
- Environmental microbiology: Soil extract enrichment, waterborne pathogen recovery, and bioremediation simulation experiments.
- Pharmaceutical QA/QC: Dissolution testing support, excipient blending validation, and stability-indicating assay preparation.
FAQ
What is the maximum flask size supported without adapter kits?
The standard platform accommodates up to four 3000 mL Erlenmeyer flasks placed directly on the shelf.
Does the unit include over-temperature and motor overload protection?
Yes—integrated thermal cutoff switches and current-sensing circuitry automatically halt operation if chamber temperature exceeds 55 °C or motor current exceeds rated limits.
Is calibration documentation provided with shipment?
A factory-issued temperature and speed verification report is included; users may perform periodic recalibration using NIST-traceable thermistors and optical tachometers.
Can the shaker operate continuously for >72 hours?
Yes—the system is rated for unattended 24/7 operation with scheduled timer cycles up to 99.9 hours per run.
Is the interior chamber humidity-controlled?
No—this model does not regulate relative humidity; condensation management relies on chamber ventilation and ambient lab RH control.
