ZiQi FA1004 Advanced Analytical Balance
| Key | Brand: ZiQi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | FA1004 |
| Max Capacity | 100 g |
| Readability | 0.1 mg (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 |
| Calibration | External calibration required |
| Interface | RS-232 serial port |
| Compliance | Meets OIML R76 and JJG 1036-2008 standards for analytical balances |
Overview
The ZiQi FA1004 Advanced Analytical Balance is a high-precision electromagnetic force compensation balance engineered for routine and regulated laboratory environments requiring consistent 0.1 mg readability across a 100 g maximum capacity. Utilizing a high-stability electromagnetic force restoration sensor—rather than strain-gauge or piezoelectric transduction—the FA1004 delivers superior long-term drift resistance, thermal stability, and mechanical robustness. Its measurement principle relies on real-time feedback control of coil current to maintain zero displacement of the weighing pan, enabling rapid stabilization (<4 seconds) and exceptional reproducibility (±0.0002 g). Designed and manufactured in Shanghai under strict quality management systems aligned with ISO 9001, the FA1004 conforms to international metrological requirements defined in OIML R76-1 (2017) for Class I analytical balances and satisfies national verification regulations JJG 1036–2008. It is intended for use in QC laboratories, academic research facilities, pharmaceutical formulation units, and materials testing labs where traceable mass measurement at the sub-milligram level is essential.
Key Features
- Electromagnetic force compensation sensor architecture ensuring minimal hysteresis, low temperature coefficient, and high signal-to-noise ratio
- Full-range tare, zero, cumulative weighing, overload/underload indication, and audible/visual fault alerts
- Large-diameter (Ø80 mm) stainless-steel weighing pan housed within an integrated draft shield with optimized airflow geometry
- High-contrast backlit LCD display with intuitive menu navigation and multilingual interface support (English, Spanish, French, Chinese)
- Adjustable weighing speed settings to accommodate dynamic sample handling or vibration-prone benchtop conditions
- RS-232 serial interface compliant with EIA/TIA-232-F standard for direct connection to label printers, PCs, or LIMS systems
- Casting aluminum housing with EMI/RFI shielding for operation in electromagnetically noisy environments
Sample Compatibility & Compliance
The FA1004 supports a wide range of solid and powdered samples—from reference standards and active pharmaceutical ingredients (APIs) to catalysts and nanomaterials—provided they remain within the 100 g load limit and do not exceed the pan’s physical dimensions. Its sealed sensor chamber prevents dust ingress, and the draft shield minimizes convective air currents during microgram-level measurements. The balance meets metrological requirements for GLP and GMP-aligned workflows: external calibration using certified weights (e.g., Class E2 or better) enables full traceability to national standards (NIM, NIST, PTB). While the FA1004 does not include internal motorized calibration, its design accommodates routine external verification per ASTM E898–22 and USP guidelines for analytical balance performance qualification.
Software & Data Management
Data output via RS-232 follows ASCII-based protocol with configurable baud rate (up to 115200), parity, and stop bits—enabling seamless integration with third-party software including LabWare LIMS, Thermo Fisher SampleManager, and custom Python/Excel automation scripts. Each transmission includes timestamped weight value, unit code, stability flag, and status indicators (e.g., “TARE”, “OVERLOAD”). Optional data logging firmware (sold separately) adds audit-trail functionality compliant with FDA 21 CFR Part 11 requirements when deployed with validated PC-based acquisition software. All firmware updates are delivered via USB-to-serial adapter and require no hardware modification.
Applications
- Pharmaceutical: Accurate dispensing of APIs and excipients during pre-formulation studies and batch release testing
- Chemistry: Precise reagent weighing for stoichiometric synthesis and titrant standardization
- Materials Science: Mass determination of thin films, nanoparticles, and catalysts before/after thermal treatment
- Environmental Testing: Weighing of filter papers pre- and post-sampling for PM₂.₅ and TSP analysis
- Food & Agriculture: Moisture content determination via gravimetric loss-on-drying protocols (AOAC 950.46)
- Academic Research: Teaching fundamental metrology principles and uncertainty budgeting in undergraduate physics and chemistry labs
FAQ
What calibration standards are recommended for the FA1004?
Certified Class E2 or better stainless-steel weights (e.g., 10 g, 20 g, 50 g, 100 g) traceable to NIST or equivalent NMIs are required for external calibration.
Does the FA1004 support internal calibration?
No—the FA1004 requires external calibration; it does not include a built-in calibration mass or motorized mechanism.
Can the balance be used in a fume hood?
Yes, provided the draft shield remains fully closed and ambient airflow velocity inside the hood is maintained below 0.2 m/s at the balance location.
Is the RS-232 interface compatible with modern Windows/macOS systems?
Yes—when paired with a certified USB-to-RS232 adapter and appropriate driver, the interface supports bidirectional communication with contemporary operating systems.
What is the recommended warm-up time before first use?
A minimum of 30 minutes is advised to achieve thermal equilibrium of the sensor and electronics, especially after power-on from standby or cold start.
