CZGY CHA-SA Air-Bath Constant-Temperature Orbital Shaker
| Brand | CZGY |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Air-Bath Constant-Temperature Shaker / Orbital Incubator Shaker |
| Timer Range | 0–120 min |
| Oscillation Frequency | 0–300 rpm |
| Oscillation Amplitude | 20 mm |
| Temperature Range | Ambient to 50 °C |
| Platform Quantity | 1 |
Overview
The CZGY CHA-SA Air-Bath Constant-Temperature Orbital Shaker is an integrated laboratory instrument combining precise air-bath temperature control with uniform orbital motion. It operates on the principle of forced convection heating and mechanical eccentric drive, delivering stable thermal environments and reproducible shaking dynamics essential for cell culture, microbial growth, enzyme assays, solubility studies, and biochemical reaction kinetics. Unlike water-bath shakers, the air-bath design eliminates liquid contamination risks, simplifies maintenance, and enables rapid temperature equilibration—particularly advantageous for applications requiring frequent sample access or sterile handling. Engineered for precision and reliability in routine and research-grade life science workflows, the CHA-SA supports GLP-compliant protocols where traceable temperature stability and consistent agitation are critical.
Key Features
- Digitally controlled temperature regulation with ±0.5 °C accuracy across the full 20–50 °C operating range (ambient start); real-time LED display ensures immediate parameter verification.
- Orbital oscillation mode with continuously variable speed control (0–300 rpm), enabling optimization for sensitive suspension cultures or robust mixing of viscous media.
- 20 mm fixed orbital diameter provides balanced shear force distribution—ideal for E. coli, yeast, mammalian cells, and recombinant protein expression systems.
- Dedicated oxygenation ports maintain adequate gas exchange within sealed vessels, supporting aerobic cultivation without compromising thermal uniformity.
- Robust single-tier platform constructed from corrosion-resistant stainless steel; accommodates standard configurations including 100 mL × 24 or 200 mL × 15 flasks, or up to 100 × 16 mm test tubes.
- Mechanical timer with 0–120 minute range (plus continuous operation mode); independent power cutoff prevents over-incubation during unattended runs.
- 300 W heating element with PID-based thermal management ensures minimal overshoot and fast recovery after door opening or load changes.
Sample Compatibility & Compliance
The CHA-SA is validated for use with glass and polypropylene culture vessels ranging from microcentrifuge tubes to 500 mL baffled flasks. Its open-air chamber design permits easy integration with CO₂-tolerant caps, vented closures, and humidity-retaining foil seals. While not certified for ISO Class 5 cleanroom operation, the unit meets general laboratory safety standards per IEC 61010-1 (electrical safety) and complies with CE marking requirements for laboratory equipment. For regulated environments, users may implement supplementary documentation—including calibration logs, preventive maintenance records, and operator training—aligned with FDA 21 CFR Part 11 expectations when paired with external data logging systems.
Software & Data Management
The CHA-SA operates via embedded hardware controls only—no proprietary software or USB connectivity is included. All operational parameters (setpoint temperature, rpm, timer duration) are retained in non-volatile memory and persist through power cycles. For laboratories requiring electronic recordkeeping, third-party USB data loggers (e.g., Omega OM-DAQPRO-5300 series) can be interfaced via analog output terminals (available upon request) to capture time-stamped temperature and speed traces. Audit trails generated this way support GMP-aligned review processes when combined with documented SOPs and change control procedures.
Applications
- Microbial growth curve analysis under defined thermal and agitation conditions.
- Induction and expression of recombinant proteins in shake-flask bioreactors.
- Solubility and dissolution testing of pharmaceutical excipients and APIs.
- Preparation of homogeneous cell suspensions prior to flow cytometry or qPCR.
- Enzymatic hydrolysis kinetics studies requiring constant temperature and mixing.
- Environmental microbiology sampling—e.g., BOD incubation, nutrient broth enrichment.
- Educational labs conducting comparative fermentation experiments or antibiotic susceptibility assays.
FAQ
What is the maximum flask size supported on the platform?
The platform accommodates up to fifteen 200 mL Erlenmeyer flasks with standard 24 mm necks, or twenty-four 100 mL flasks. Larger vessels require custom mounting solutions.
Does the unit include a calibration certificate?
No factory-issued calibration certificate is provided; however, the temperature sensor and tachometer are factory-trimmed to specification. Users should perform initial verification using NIST-traceable thermometers and optical tachometers per internal QA protocols.
Can the CHA-SA operate continuously beyond 120 minutes?
Yes—the timer offers a “continuous run” mode that bypasses automatic shutdown; manual intervention is required to stop operation.
Is the unit suitable for use in cold rooms?
Operation below ambient temperature is not supported. The minimum effective setpoint is ambient +2 °C due to reliance on resistive heating only.
What maintenance is recommended for long-term reliability?
Biannual inspection of drive belt tension, cleaning of air intake grilles, and verification of platform levelness using a machinist’s level are advised. Lubrication is not required for the sealed AC induction motor.
