Brookfield 5000BF Precision Electronic Balance
| Origin | Zhejiang, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (PRC) |
| Model | 5000BF |
| Instrument Type | Precision Balance |
| Capacity Range | 20–100 g |
| Readability | 0.00001 g (10 µg) |
| Pan Dimensions | 160 mm × 160 mm |
| Power Supply | AC 220 V, 50 Hz |
| Display Options | LED or LCD |
| Key Functions | Tare, Counting, Unit Conversion, Auto-Calibration (internal or external) |
Overview
The Brookfield 5000BF Precision Electronic Balance is an analytical-grade weighing instrument engineered for high reproducibility and long-term stability in regulated laboratory environments. It operates on electromagnetic force compensation (EMFC) principle — the industry-standard method for precision balances — where sample mass is determined by the current required to restore a load-receiving sensor to its null position. This architecture ensures minimal drift, negligible mechanical hysteresis, and immunity to environmental vibration within typical lab conditions. Designed specifically for applications demanding sub-10 µg resolution, the 5000BF delivers consistent performance across its full 20–100 g capacity range, with factory-calibrated linearity traceable to NIST-traceable mass standards. Its robust metal-sprayed base and stainless-steel weighing pan (160 mm × 160 mm) provide structural rigidity and corrosion resistance essential for routine use in chemistry, pharmaceutical QC, and materials science labs.
Key Features
- Electromagnetic force compensation (EMFC) transduction system for zero-mechanical-wear operation and high repeatability
- 10 µg readability (0.00001 g) with internal or external calibration capability compliant with ISO/IEC 17025 calibration protocols
- Stainless-steel weighing pan (160 × 160 mm) and powder-coated metal base for durability and ease of decontamination
- Dual-display configuration options: high-contrast LED or low-power LCD, both with adjustable brightness and auto-off timing
- Integrated tare, piece counting (with user-defined unit weight), percent weighing, and density determination modes
- RS-232 interface standard; optional USB-to-serial adapter available for direct connection to LIMS or ELN systems
- Auto-leveling indicator and built-in leveling feet ensure optimal alignment under varying bench conditions
Sample Compatibility & Compliance
The 5000BF accommodates a broad spectrum of solid and granular samples — including powders, tablets, catalysts, reference standards, and micro-volume reagents — without requiring specialized fixtures. Its open pan geometry minimizes air-current interference during low-mass measurements. The balance meets essential regulatory prerequisites for GLP and GMP environments: it supports audit-trail-capable data logging when paired with compliant software, and its calibration records satisfy requirements outlined in USP , ASTM E898, and ISO 9001:2015 Clause 7.6. While not intrinsically certified for hazardous-area use, it complies with IEC 61010-1 safety standards for laboratory electrical equipment and carries CE marking per EU Directive 2014/30/EU (EMC) and 2014/35/EU (LVD).
Software & Data Management
Data output follows ASCII-based serial protocol over RS-232, enabling seamless integration with third-party laboratory software such as LabWare LIMS, Thermo Fisher SampleManager, or custom Python- or LabVIEW-driven acquisition tools. Optional Windows-compatible PC software provides real-time weight streaming, statistical analysis (mean, SD, CV%), batch export to CSV/Excel, and electronic signature support for 21 CFR Part 11 compliance when deployed with validated IT infrastructure. All weight events — including tare, calibration, and error flags — are timestamped and stored locally in non-volatile memory for post-hoc review.
Applications
- Pharmaceutical formulation: active pharmaceutical ingredient (API) dispensing, excipient ratio verification, and tablet weight uniformity testing per USP
- Academic research: gravimetric preparation of standard solutions, catalyst loading quantification, and nanomaterial mass characterization
- Quality control laboratories: incoming raw material verification, finished product release testing, and stability study sample weighing
- Chemical synthesis: stoichiometric reagent dosing, yield calculation, and reaction mixture monitoring
- Reference material certification: traceable mass assignment for CRM production under ISO Guide 34
FAQ
What is the recommended calibration frequency for the 5000BF in a GLP-compliant lab?
Calibration should be performed before first use, after relocation, following any mechanical shock, and at defined intervals — typically daily or per shift — verified against certified weights meeting ISO/IEC 17025 accreditation.
Does the 5000BF support dynamic weighing or motion compensation?
No — it is designed for static, stable-sample weighing only. Dynamic or vibrating-sample applications require dedicated moisture analyzers or industrial checkweighers.
Can the balance be connected to a networked LIMS without additional hardware?
Direct Ethernet or Wi-Fi connectivity is not built-in; however, RS-232 output can be routed via a certified serial-to-Ethernet converter compatible with your LIMS’ device driver stack.
Is the 160 × 160 mm pan compatible with standard 100-mm-diameter desiccators?
Yes — the pan’s footprint allows unobstructed placement beneath most benchtop desiccators; users may employ optional draft shields (sold separately) to further reduce convective errors.
What documentation is supplied for IQ/OQ validation?
Factory test reports, mechanical drawings, firmware revision logs, and a blank URS-compatible validation protocol template are included in the installation qualification (IQ) package upon request.
