DZ-900A Dual-Layer Floor-Standing Orbital Shaker
| Origin | Jiangsu, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (PRC) |
| Model | DZ-900A |
| Price | USD 2,480 (FOB Jiangsu) |
| Instrument Category | General-Purpose Orbital Shaker |
| Timer Range | Not equipped with mechanical/electronic timer (external timer or lab workflow control required) |
| Oscillation Frequency | 40–250 rpm |
| Orbital Diameter | 25 mm (standard for orbital shakers unless specified otherwise) |
| Temperature Control | Ambient-only operation (non-thermostatic) |
| Shelf Configuration | Two independently accessible stainless-steel shaking platforms |
| Capacity | 120 × 250 mL flasks or 96 × 500 mL flasks per layer |
| Dimensions (W×D×H) | 950 × 650 × 730 mm |
| Power Consumption | 100 W |
| Drive Mechanism | Brushless DC motor with microprocessor-controlled feedback loop |
| Operating Mode | Horizontal orbital motion (eccentric drive) |
Overview
The DZ-900A Dual-Layer Floor-Standing Orbital Shaker is an engineered solution for high-throughput liquid culture agitation in microbiology, cell biology, and fermentation laboratories. Designed for sustained, low-shear orbital motion—characterized by a 25 mm nominal orbit diameter—the system operates exclusively at ambient temperature without integrated heating or cooling. Its dual-tier platform architecture enables parallel processing of up to 216 standard culture vessels (e.g., 120 × 250 mL Erlenmeyer flasks on the upper deck and 96 × 500 mL flasks on the lower), supporting scalable inoculation, aeration-dependent growth studies, and serial dilution workflows. The unit employs a brushless DC motor coupled with closed-loop speed regulation to ensure ±1 rpm stability across the full 40–250 rpm operating range, minimizing mechanical drift during extended runs (e.g., 72+ hour bacterial batch cultures). Structural rigidity is achieved via a reinforced steel frame and vibration-damping rubber feet, compliant with ISO 14644-1 Class 8 cleanroom-compatible installation protocols when placed on level, non-resonant flooring.
Key Features
- Dual independent stainless-steel shaking platforms (each 600 × 450 mm), each rated for uniform load distribution up to 25 kg
- Precision digital speed control with LED display and push-button interface; no analog dials or mechanical potentiometers
- Brushless DC motor with thermal overload protection and electromagnetic braking for rapid, repeatable stop/start cycles
- IP20-rated electrical enclosure meeting IEC 60529 requirements for dry indoor laboratory environments
- Front-access service panel for belt tension inspection and motor mounting verification (no proprietary tools required)
- CE-marked per Directive 2014/30/EU (EMC) and 2014/35/EU (LVD); RoHS 2011/65/EU compliant materials throughout
Sample Compatibility & Compliance
The DZ-900A accommodates standard laboratory glassware and disposable bioreactors including Erlenmeyer flasks (100–1000 mL), Fernbach flasks, baffled culture bottles, and stackable roller bottles (when secured with universal clamps). Flask retention relies on standard rubber matting (included) or optional silicone-coated platform inserts (sold separately). The shaker does not incorporate humidity control, CO2 monitoring, or sterile barrier systems; therefore, it is intended for use in ISO Class 7 or cleaner environments only when paired with laminar flow hoods or isolator integration. It meets ASTM E1249-22 Annex A1 criteria for mechanical consistency in aerobic microbial growth support equipment and supports GLP documentation requirements through external logging of operational parameters (start time, duration, rpm setpoint).
Software & Data Management
This model operates as a standalone instrument without embedded firmware-based data logging or USB/RS-232 connectivity. Speed settings are manually configured and retained only while powered; no non-volatile memory is present. For audit-trail compliance under FDA 21 CFR Part 11 or EU Annex 11, users must integrate external validation-grade timers (e.g., Omega HH309A with NIST-traceable calibration) and record operational metadata in laboratory notebooks or LIMS. Optional third-party IoT adapters (e.g., Sensirion SCD41 + Raspberry Pi HAT) may be mounted externally to monitor ambient temperature/humidity near the unit—but such configurations fall outside factory validation scope.
Applications
- High-density bacterial culture propagation (E. coli, Bacillus spp.) in shake-flask bioprocess development
- Mycelial suspension culture for antibiotic production screening
- Yeast fermentation kinetics under oxygen-limited or aerobic conditions
- Antibiotic susceptibility testing requiring standardized agitation during broth microdilution assays
- Preparation of homogeneous cell suspensions prior to centrifugation or flow cytometry analysis
- Buffer equilibration and reagent mixing where thermal stability is not required
FAQ
Does the DZ-900A include a built-in timer or programmable cycle function?
No. It lacks internal timing circuitry; external timing devices must be used for duration control.
Is the shaker suitable for use inside a CO2 incubator or cold room?
No. It is rated for ambient operation only (10–35 °C, <80% RH non-condensing) and contains no environmental sealing.
Can both layers operate at different speeds simultaneously?
No. The dual platforms are mechanically coupled and rotate at identical rpm; independent speed control is not supported.
What safety certifications apply to this unit?
CE marking per EMC and LVD Directives; RoHS 2011/65/EU compliance; no UL/cUL listing is available.
Is calibration documentation provided with shipment?
A factory-issued speed verification report (traceable to national metrology institute standards) is included; annual recalibration is recommended per ISO/IEC 17025 guidelines.
