CZGY 84-1A Multi-Station Magnetic Stirrer
| Brand | CZGY |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic Lab Equipment |
| Model | 84-1A |
| Instrument Type | Magnetic Stirrer |
| Maximum Stirring Volume per Station | 1 L |
| Speed Range | 0–2400 rpm |
| Station Configurations | 2-, 4-, 6-, 8-, or 10-Station Variants |
| Control Method | Independent Rotary Speed Control per Station |
| Construction Material | Full Stainless Steel (304) |
| Dimensions (L×W×H) | 310×210×115 mm (2-station) to 660×310×115 mm (10-station) |
Overview
The CZGY 84-1A Multi-Station Magnetic Stirrer is an engineered solution for high-throughput laboratory mixing applications requiring precise, independent control across multiple sample vessels. Based on the principle of magnetic coupling—where a rotating permanent magnet beneath the heated plate induces synchronous rotation of a magnetic stir bar immersed in the sample—the instrument delivers consistent torque transfer without mechanical contact, eliminating seal wear and contamination risk. Designed for routine use in analytical, quality control, and preparative workflows, the 84-1A supports simultaneous operation of up to ten stations, each with fully decoupled speed regulation. Its robust stainless-steel housing ensures chemical resistance, thermal stability, and long-term structural integrity under continuous operation in regulated environments such as ISO 17025-accredited labs or GLP-compliant research settings.
Key Features
- Independent rotary speed control per station—no shared potentiometer or digital bus interference between channels
- Wide speed range of 0–2400 rpm with smooth analog adjustment, enabling optimization for low-viscosity aqueous solutions and moderately viscous organic media
- Full 304 stainless-steel construction—including top plate, housing, and base—for corrosion resistance against acids, bases, and organic solvents
- Compact modular footprint: scalable from 2-station (310×210×115 mm) to 10-station (660×310×115 mm) configurations, designed for benchtop space efficiency
- No integrated heating function—intentionally configured for non-thermal mixing applications where temperature stability is maintained externally (e.g., water baths or environmental chambers)
- Low-noise DC motor drive system with electromagnetic shielding to minimize electrical interference in sensitive instrumentation zones
Sample Compatibility & Compliance
The 84-1A accommodates standard laboratory glassware including beakers (up to 1000 mL per station), Erlenmeyer flasks, and cylindrical reaction vessels compatible with standard PTFE-coated stir bars (6–40 mm length). It meets general safety requirements per IEC 61010-1:2010 for electrical equipment used in laboratory environments. While not certified to UL or CE standards out-of-the-box (as supplied for domestic Chinese market distribution), the unit’s design adheres to fundamental mechanical and electrical safety conventions applicable to Class II laboratory stirrers. Users integrating the device into FDA-regulated workflows (e.g., pharmaceutical QC) may document its operational parameters within SOPs and include it in equipment qualification protocols (IQ/OQ) per 21 CFR Part 11 data integrity guidelines when paired with validated manual recording practices.
Software & Data Management
The CZGY 84-1A operates as a standalone analog instrument with no embedded microprocessor, firmware, or digital interface. All speed adjustments are performed manually via front-panel rotary knobs—ensuring deterministic behavior, zero firmware failure modes, and full traceability through operator logbooks. This architecture aligns with laboratories prioritizing simplicity, audit readiness, and avoidance of software validation overhead. For institutions requiring electronic data capture, external USB-connected tachometers or video-based motion analysis systems can be employed to record rotational speed per station during method execution—supporting ALCOA+ data integrity principles when documented in controlled procedures.
Applications
- Parallel titration setup across multiple samples in environmental testing (e.g., COD, BOD, heavy metal digestion per EPA Method 3015A)
- Simultaneous buffer equilibration for HPLC mobile phase preparation in analytical chemistry labs
- Consistent reagent dispersion in ELISA plate coating protocols prior to incubation
- Homogenization of nanoparticle suspensions during synthesis scale-up studies
- Multi-vessel dissolution testing in pre-formulation development (aligned with USP & Ph. Eur. general chapter <711>)
- Standardized mixing in microbiological media preparation where thermal input must be excluded to prevent premature agar solidification
FAQ
Does the 84-1A include a heating function?
No. The 84-1A is a non-heating magnetic stirrer. Temperature control must be achieved externally using water baths, air ovens, or chillers.
Can stir bars of different sizes be used simultaneously across stations?
Yes—each station accepts standard cylindrical or oval PTFE-coated stir bars ranging from 6 mm to 40 mm in length, provided vessel geometry permits stable rotation.
Is speed calibration traceable to national standards?
The unit does not ship with factory calibration certificates; however, end-users may perform in-house verification using NIST-traceable handheld tachometers per ASTM E2919-21.
What maintenance is required for long-term reliability?
Periodic cleaning of the stainless-steel surface with isopropyl alcohol and inspection of motor ventilation grilles for dust accumulation—no lubrication or internal servicing is specified by the manufacturer.
Are replacement knobs or station modules available separately?
CZGY provides OEM spare parts including rotary control assemblies and stainless-steel top plates; contact authorized distributors for part numbers and lead times.
