CZGY ZD-88C High-Capacity Air-Bath Constant-Temperature Orbital Shaker

Overview

The CZGY ZD-88C High-Capacity Air-Bath Constant-Temperature Orbital Shaker is an engineered platform for precise temperature-controlled agitation of biological and biochemical samples. Unlike water-bath shakers, this unit employs forced-air convection as the thermal transfer medium—enabling rapid, uniform heating across the entire oscillating platform without direct liquid contact. It operates on the principle of orbital motion (non-reciprocating, circular trajectory), delivering consistent mixing energy ideal for aerobic microbial culture, enzyme kinetics assays, cell suspension maintenance, and hybridization protocols. Designed for continuous-duty laboratory environments, the ZD-88C integrates a brushless DC motor for torque stability across its full speed range, eliminating carbon brush wear and ensuring long-term rotational reproducibility. Its thermal architecture features double-walled stainless steel construction with high-efficiency insulation, minimizing thermal drift and external heat emission—critical for shared lab spaces and temperature-sensitive workflows.

Key Features

• Brushless DC motor drive: Delivers stable rotational output from 40 to 350 rpm with ±0.5 rpm speed accuracy; no brush degradation or electrical noise interference.
• Air-bath heating system: 1200 W resistive heater with forced-air circulation ensures uniform temperature distribution (±0.3°C typical stability at 37°C) across the full 24 mm orbit diameter platform.
• Dual independent timers: Separate programmable countdown timers for temperature hold duration and oscillation runtime (both 0–9999 minutes), supporting unattended overnight operation.
• Large-view observation window with integrated LED illumination: Enables real-time monitoring of sample turbidity, pellet formation, or media clarity without opening the chamber.
• Single-tier stainless steel platform: Optimized load capacity supports up to eighteen 500 mL Erlenmeyer flasks (or equivalent volume in test tubes or culture bottles); platform surface is electropolished for corrosion resistance and ease of decontamination.
• Intelligent PID temperature control: Microprocessor-based regulation with segmented LCD display provides intuitive setpoint entry, real-time feedback, and auto-tuning capability for varying ambient conditions.

Sample Compatibility & Compliance

The ZD-88C accommodates standard microbiological and molecular biology vessels—including glass and polycarbonate Erlenmeyer flasks, serum bottles, deep-well plates, and custom bioreactor sleeves—within its mechanical and thermal operating envelope. Its ambient+5°C to 50°C range aligns with common requirements for mesophilic bacterial growth (e.g., E. coli, Bacillus subtilis), yeast fermentation (Saccharomyces cerevisiae), mammalian cell suspension culture (e.g., CHO, HEK293 under low-shear conditions), and immunoassay incubation steps. While not certified for IEC 61010-1 or ISO/IEC 17025 accreditation out-of-box, the instrument’s design adheres to general safety principles for Class II laboratory equipment: grounded chassis, overtemperature cutoff (hardware-limited at 55°C), and thermal fuse redundancy. Users deploying it in GLP or GMP contexts may validate performance per internal SOPs referencing ASTM E2500 (Good Practice for Verification and Validation of Laboratory Equipment) and USP (General Information on Laboratory Instruments).

Software & Data Management

The ZD-88C operates via embedded firmware with no external software dependency. All operational parameters—including set temperature, target speed, elapsed time, and remaining timer—are displayed simultaneously on the segmented LCD interface. Though it lacks USB/RS-232 connectivity or data logging capability, its dual-timer architecture supports traceable protocol execution: users can document start time, setpoints, and duration manually for audit trails. For laboratories requiring electronic records, integration with external environmental monitoring systems (e.g., Vaisala viewLinc or DeltaTrak BlueView) is feasible using optional analog voltage output modules (not included). Firmware updates are not field-upgradable; calibration verification must be performed annually using NIST-traceable thermistors and tachometers per manufacturer-recommended intervals.

Applications

• Microbial cultivation: Aerobic propagation of bacteria, fungi, and actinomycetes in nutrient broth or defined minimal media.
• Protein expression: Induction and maintenance of recombinant protein production in E. coli BL21(DE3) or similar strains.
• Cell line expansion: Gentle suspension culture of insect (Sf9) or mammalian (HEK293, Jurkat) cells prior to transfection or harvest.
• Biochemical assay preparation: Homogenization of enzyme-substrate mixtures, antibody-antigen binding reactions, and ligand-receptor equilibration steps.
• Environmental microbiology: BOD testing, wastewater inoculum activation, and soil slurry agitation for microbial community analysis.
• Quality control: Media sterility validation, growth promotion testing per USP , and stability studies of liquid pharmaceutical formulations.

FAQ

Does the ZD-88C support refrigeration or cooling below ambient temperature?
No. This is a heating-only air-bath shaker. Its operational range begins at ambient +5°C and extends to 50°C. For sub-ambient applications, a dedicated refrigerated shaker is required.
What is the maximum flask loading configuration supported?
The single platform accommodates up to eighteen 500 mL Erlenmeyer flasks arranged in a staggered grid pattern. Load distribution must remain symmetrical to prevent vibration imbalance at higher speeds (>250 rpm).
Is the unit compliant with FDA 21 CFR Part 11 for electronic records?
No. The ZD-88C does not generate, store, or transmit electronic records. It meets basic electrical safety standards but requires manual documentation for regulated environments.
Can the oscillation and temperature functions operate independently?
Yes. The dual-timer architecture allows independent activation: temperature control may run without oscillation (static incubation mode), and oscillation may run at ambient temperature without heating.
What maintenance is recommended for long-term reliability?
Monthly inspection of air intake grilles for dust accumulation, annual verification of temperature and speed accuracy using calibrated references, and periodic cleaning of the stainless steel chamber with 70% ethanol or approved lab disinfectants.