CZGY JJ-1.300W High-Torque Electric Stirrer
| Brand | CZGY |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Model | JJ-1.300W |
| Instrument Type | Electric Stirrer |
| Max. Mixing Volume | 30 L |
| Speed Range | 0–3000 rpm |
| Motor Power | 300 W |
| Timer Range | 0–120 min |
| Temperature Control | Not Integrated |
Overview
The CZGY JJ-1.300W High-Torque Electric Stirrer is an industrial-grade laboratory stirring system engineered for consistent, low-vibration mixing of moderate-to-high viscosity liquids across research, quality control, and pilot-scale preparation workflows. Built around a brushless permanent-magnet DC motor and precision-tuned torque-amplification circuitry, it delivers stable rotational output without electromagnetic noise or speed drift—even under load variations typical in viscous solutions (e.g., polymer dispersions, cell culture media, or suspension-based reagents). Unlike basic AC-driven stirrers, this unit maintains nominal speed accuracy within ±2% across its full 0–3000 rpm range, enabling reproducible shear history application during formulation development or dissolution testing. Its mechanical architecture supports vertical and horizontal positional adjustment via dual-locking mechanisms on both the main column and cross-arm, allowing precise alignment with vessel geometry—critical for avoiding vortex asymmetry or splashing in open beakers or tall cylinders up to 30 L capacity.
Key Features
- 300 W high-efficiency permanent-magnet DC motor with integrated thermal protection and overload cutoff
- Stepless electronic speed control via calibrated rotary potentiometer (0–3000 rpm), offering fine-grained resolution down to 10 rpm increments
- Programmable mechanical timer (0–120 minutes) with audible end-of-cycle alert and auto-shutoff functionality
- Robust aluminum alloy support frame with dual-axis adjustability: vertical travel up to 250 mm; horizontal extension up to 300 mm
- Universal clamp interface compatible with standard Ø8–Ø16 mm stainless steel or PTFE-coated stirring rods
- No built-in heating or cooling elements—designed for integration with external temperature-controlled baths or environmental chambers
Sample Compatibility & Compliance
The JJ-1.300W is optimized for use with glass, polypropylene, and stainless-steel vessels ranging from 50 mL beakers to 30 L carboys. It accommodates both magnetic stir bar–free applications (e.g., large-volume homogenization) and rod-based agitation where magnetic coupling is impractical due to container wall thickness or ferromagnetic interference. While not certified to IEC 61000-4 EMC standards out-of-box, its low EMI design meets general laboratory electromagnetic compatibility expectations per ISO/IEC 17025 Annex A.3 guidelines for ancillary equipment used in accredited testing environments. No CE, UL, or FDA registration applies, as the device lacks embedded software or data logging—making it suitable for GLP-compliant labs where manual process documentation suffices.
Software & Data Management
This stirrer operates exclusively via analog hardware controls—no firmware, USB interface, or digital display is present. Consequently, no software installation, driver configuration, or cybersecurity validation is required. All operational parameters (speed setting, timer value, power state) are recorded manually by the user in lab notebooks or LIMS-compatible log sheets. For audit readiness, users may implement SOPs referencing ASTM D2196 (Standard Test Methods for Rheological Properties of Non-Newtonian Materials) or USP (Dissolution Testing), wherein consistent stirrer positioning and speed calibration are explicitly mandated. Calibration verification can be performed using a traceable handheld tachometer per ISO 17025 Clause 6.5.2.
Applications
- Preparation of buffer solutions, nutrient media, and emulsion-based pharmaceutical intermediates
- Mixing of high-solids slurries in materials science labs (e.g., ceramic precursors, battery electrode slurries)
- Homogenization of biological suspensions prior to centrifugation or filtration steps
- Accelerated aging studies requiring controlled agitation under ambient or bath-controlled conditions
- Support instrumentation in ASTM D445 (kinematic viscosity) and ISO 3104 test protocols where standardized stir rate is critical
FAQ
Does the JJ-1.300W include temperature control capability?
No. This model provides only mechanical agitation. Temperature regulation must be achieved externally using water baths, chillers, or heated enclosures.
Can it be used with corrosive solvents such as concentrated acids or organic halides?
Yes—provided the stirring rod material (e.g., PTFE-coated, Hastelloy, or glass) and vessel compatibility are verified independently. The motor housing and control unit are not chemically sealed.
Is speed calibration traceable to national standards?
The unit does not ship with a calibration certificate, but users may verify rotational speed using a NIST-traceable optical tachometer at any point during operation.
What maintenance intervals are recommended for long-term reliability?
Inspect mounting hardware and rod clamps monthly; lubricate elevation gears semiannually with silicone-based grease; replace carbon brushes only if motor performance degrades after >5,000 operating hours.
Is this instrument suitable for GMP-regulated manufacturing environments?
It may be deployed in GMP settings when incorporated into validated processes with documented calibration, preventive maintenance logs, and change control procedures—but it is not inherently 21 CFR Part 11 compliant due to absence of electronic records or audit trails.
