AND GF-6001A Precision Balance

Overview

The AND GF-6001A Precision Balance is a high-stability, general-purpose laboratory balance engineered for routine mass measurement tasks requiring consistent repeatability and traceable accuracy in quality control, production line verification, and educational laboratories. Designed and manufactured in Japan under strict A&D quality control protocols, this balance operates on electromagnetic force compensation (EMFC) technology — delivering stable, drift-resistant measurements without mechanical levers or knife-edge suspensions. With a maximum capacity of 6200 g and readability of 0.1 g, the GF-6001A meets the performance requirements for Class II and III weighing applications as defined in OIML R 76 and ASTM E898–22. Its compact footprint (212 × 317 × 93 mm) and large 165 × 165 mm stainless steel weighing pan accommodate bulky samples while maintaining structural rigidity and thermal stability across ambient temperature fluctuations (10–40 °C).

Key Features

• Electromagnetic force compensation (EMFC) sensor architecture ensures long-term linearity and minimal zero drift over extended operation cycles.
• External calibration capability using certified weights (e.g., Class M2 or better), supporting periodic verification per ISO/IEC 17025 clause 6.5 and internal audit requirements.
• Dual-range stabilization algorithm dynamically adjusts response time: typical settling time is ≤1.0 s for loads up to 500 g and ≤1.5 s at full scale — optimized for throughput without compromising resolution.
• IP54-rated housing provides resistance against dust ingress and incidental liquid splashes, suitable for shared lab environments and light industrial settings.
• RS-232 interface standard; optional USB-to-serial adapter enables direct data logging into LIMS or Excel-based QA databases with timestamped records.
• GLP-compliant printout mode includes date/time stamp, operator ID field (manual entry), balance ID, calibration status, and net/gross/tare identifiers — facilitating 21 CFR Part 11–aligned documentation where electronic signatures are implemented externally.

Sample Compatibility & Compliance

The GF-6001A accommodates a broad range of sample forms — including powders in weighing boats, packaged components on trays, volumetric flasks, and irregularly shaped objects placed directly on the pan. Its overload protection (up to 150% of rated capacity) prevents sensor damage during accidental overloading. The balance complies with international regulatory frameworks applicable to non-automatic weighing instruments: OIML R 76-1 (2021 edition), EN 45501:2015, and ANSI/NIST HB 105–2020. While not intrinsically certified for hazardous locations, it may be deployed in Zone 2 environments when installed per IEC 60079-14 guidelines. For pharmaceutical QC workflows, the device supports weight-based release testing aligned with USP and EP 2.1.2 criteria for repeatability (≤0.1 g at 6200 g fulcrum point satisfies the ≤0.10% RSD threshold for Class III devices).

Software & Data Management

No proprietary software installation is required for basic operation. The built-in serial protocol transmits ASCII-formatted weight data (e.g., “S+6200.0” for stable reading) compatible with third-party acquisition tools such as LabX (Mettler Toledo), WinWedge (TAL Technologies), or custom Python/Node.js scripts using PySerial or SerialPort libraries. Audit trail functionality is implemented via external systems: all calibration events, tare operations, and unit changes generate timestamped logs accessible through RS-232 output — enabling integration with validated electronic record systems that enforce ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available). Firmware versioning (v3.2.x or later) supports firmware update via PC connection, with SHA-256 checksum validation prior to upload.

Applications

• Raw material receipt inspection in food, chemical, and polymer manufacturing facilities.
• Batch formulation verification in compounding labs and contract manufacturing organizations (CMOs).
• Calibration mass verification for secondary standards used in metrology labs.
• Education: undergraduate physics and chemistry labs requiring robust, low-maintenance instrumentation for density, buoyancy, and stoichiometry experiments.
• Environmental testing labs performing filter weighing for particulate matter (PM10/PM2.5) analysis — though not designed for microgram-level gravimetric analysis, its repeatability supports gross mass tracking pre/post-drying cycles.

FAQ

Is the GF-6001A suitable for ISO/IEC 17025 accredited testing laboratories?
Yes — when operated within specified environmental conditions (temperature stability ±2 °C/hour, humidity <80% RH non-condensing) and calibrated using traceable standards, the GF-6001A supports uncertainty budgets compliant with ILAC-G8:2021.
Does it support internal calibration?
No — the GF-6001A requires external calibration with certified weights; internal motorized calibration is not implemented in this model series.
Can it be connected to a networked LIMS system?
Direct Ethernet or Wi-Fi connectivity is not available; however, RS-232 output can be routed through a serial server (e.g., Digi One SP) to enable TCP/IP forwarding into enterprise LIMS platforms.
What is the recommended recalibration interval?
Per manufacturer guidance and ISO 10012, initial verification should occur at installation, followed by user-defined intervals based on usage frequency and risk assessment — typically every 3–6 months for moderate-use environments.
Is the weighing pan removable for cleaning?
Yes — the stainless steel pan is secured with two M3 screws and may be removed without tools; reinstallation requires no recalibration due to fixed mechanical alignment.