ZiQi FA2004 Advanced Analytical Balance
| Key | Brand: ZiQi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | FA2004 |
| Max Capacity | 200 g |
| Readability | 0.1 mg (1 × 10⁻⁴ g) |
| Accuracy Class | ISO 9001-compliant I-class |
| Repeatability | ±0.0002 g |
| Linearity Error | ±0.0003 g |
| Stabilization Time | ≤4 s |
| Pan Diameter | Ø80 mm |
| Dimensions (L×W×H) | 340 × 215 × 350 mm |
| Net Weight | 6.5 kg |
| Power Supply | AC adapter (included) |
| Calibration | External |
| Interface | RS-232 |
Overview
The ZiQi FA2004 Advanced Analytical Balance is a high-precision electromagnetic force compensation balance engineered for routine and regulated laboratory environments requiring consistent sub-milligram mass measurement. Operating on the principle of electromagnetic force restoration—where an electromagnet generates a counterforce to precisely balance the gravitational load on the weighing pan—the FA2004 delivers stable, drift-resistant readings with minimal thermal influence. Designed to meet ISO/IEC 17025–aligned operational rigor, it supports applications in pharmaceutical quality control, academic research, chemical formulation, and materials science where trace-level mass quantification is essential. Its I-class accuracy classification per OIML R76 and adherence to ASTM E898-22 guidelines for analytical balance performance ensure compliance with internationally recognized metrological standards.
Key Features
- Electromagnetic force compensation sensor architecture ensures high reproducibility, low hysteresis, and extended service life without mechanical wear.
- Optimized stabilization algorithm achieves full-scale equilibrium in ≤4 seconds—significantly reducing throughput time during high-volume sample workflows.
- Large-diameter (Ø80 mm) stainless-steel weighing pan accommodates standard crucibles, volumetric flasks, and multi-vial trays while maintaining center-of-load integrity.
- Integrated draft shield with optimized airflow geometry minimizes convective interference without compromising operator access or visual clarity.
- Full-range tare, zero, cumulative weighing, overload/underload detection, and audible/visual fault alerts enhance operational safety and data integrity.
- Cast aluminum housing with EMI/RFI shielding provides structural rigidity and electromagnetic noise immunity in shared instrumentation labs.
Sample Compatibility & Compliance
The FA2004 accommodates solid, granular, and low-viscosity liquid samples within its 200 g capacity envelope. Its open-top draft shield design permits direct placement of standard 50 mL centrifuge tubes, 100 mL beakers, and ceramic crucibles. The balance conforms to ISO 9001 manufacturing controls and supports GLP/GMP documentation requirements through traceable external calibration using certified Class E2 or F1 weights. While not factory-equipped with internal calibration, its external calibration protocol is fully compatible with ISO/IEC 17025-accredited calibration laboratories. All firmware and hardware configurations comply with CE marking directives (2014/30/EU EMC Directive and 2014/35/EU LVD Directive).
Software & Data Management
Equipped with a standard RS-232 serial interface, the FA2004 enables bidirectional communication with laboratory information management systems (LIMS), electronic lab notebooks (ELN), and statistical process control (SPC) platforms. ASCII-based output format includes timestamped mass values, unit identifiers, and status flags (e.g., “STABLE”, “OVERLOAD”), facilitating automated data capture without proprietary drivers. Optional terminal emulation software allows real-time streaming, batch export, and configurable data logging intervals. Audit trail functionality—including user ID tagging and calibration event logging—is achievable when integrated with compliant third-party data acquisition systems adhering to FDA 21 CFR Part 11 requirements.
Applications
- Pharmaceutical QC testing: active pharmaceutical ingredient (API) dispensing, reference standard weighing, and dissolution tablet mass verification per USP <41>.
- Academic research: gravimetric analysis of catalysts, polymer synthesis yield determination, and stoichiometric reagent preparation.
- Environmental testing labs: filter mass gain measurement for PM₂.₅/PM₁₀ particulate matter analysis (EPA Method 201A).
- Materials characterization: powder density calculation via pycnometry, coating thickness validation by mass loss, and alloy composition verification.
- Educational laboratories: hands-on instruction in metrology fundamentals, uncertainty budgeting, and GUM-compliant measurement reporting.
FAQ
What calibration standards are recommended for the FA2004?
External calibration using OIML Class E2 or F1 stainless-steel weights is required. Calibration intervals should follow risk-based assessment per ISO/IEC 17025 Clause 6.5 or internal SOPs.
Does the FA2004 support internal calibration?
No—it is configured exclusively for external calibration to maintain mechanical simplicity and long-term stability of the electromagnetic transducer.
Can the balance interface with modern LIMS platforms?
Yes, via RS-232 serial communication using standard ASCII protocols. Integration with LabVantage, STARLIMS, or Thermo Fisher SampleManager requires no custom firmware.
Is the FA2004 suitable for use in ISO Class 5 cleanrooms?
It may be deployed in such environments provided the draft shield remains closed during operation and ambient temperature variation is maintained within ±2 °C/hour per USP <41> guidance.
What is the typical measurement uncertainty at full scale?
Based on repeatability (±0.0002 g), linearity (±0.0003 g), and calibration uncertainty (typically ±0.0001 g for E2 weights), combined standard uncertainty at 200 g is approximately ±0.0004 g (k=2).
