AND GF-6002A Precision Top-Loading Balance

Overview

The AND GF-6002A is a high-stability, top-loading precision balance engineered for routine mass measurement in quality control laboratories, pharmaceutical production environments, and academic research settings where consistent repeatability and traceable calibration are essential. Utilizing electromagnetic force restoration (EMFR) sensing technology, the GF-6002A delivers reliable weight determination across its full 6200 g capacity range with a readability of 0.01 g. Its robust mechanical design incorporates a reinforced stainless-steel weighing pan (165 × 165 mm), draft shield-compatible form factor (212 × 317 × 93 mm W×D×H), and optimized thermal mass distribution to minimize drift under ambient laboratory fluctuations. The device operates in accordance with fundamental metrological principles defined in OIML R76 and supports traceability through external calibration using certified weights—ensuring alignment with ISO/IEC 17025 requirements for accredited testing and calibration laboratories.

Key Features

• Electromagnetic force restoration (EMFR) sensor system for high linearity and long-term stability
• External calibration capability compliant with ISO 9001 and ASTM E898-22 guidelines for verification procedures
• Stainless-steel weighing pan (165 × 165 mm) resistant to corrosion and mechanical wear
• Fast stabilization time: ≤1.0 s for loads up to 50 g; ≤1.5 s for full-scale loading
• Integrated overload protection and automatic zero-tracking algorithm to maintain baseline integrity
• GLP/GMP-compliant operation mode with time-stamped calibration logs and user-accessible audit trail (via optional RS-232 or USB interface)
• Auto-power-off and auto-zero functions to reduce energy consumption without compromising readiness

Sample Compatibility & Compliance

The GF-6002A accommodates a wide variety of sample containers—including beakers, crucibles, weigh boats, and standard volumetric flasks—without requiring platform modification. Its open-top configuration facilitates rapid material handling while maintaining sufficient clearance for standard lab glassware up to 150 mm in height. The balance meets mechanical safety standards per IEC 61010-1 and is designed for use in non-hazardous environments classified under Pollution Degree 2. It supports regulatory workflows aligned with FDA 21 CFR Part 11 when paired with validated data acquisition software, enabling electronic signature capture, user role management, and immutable record retention. All firmware revisions undergo internal verification against JIS B 7721 and EN 45501 compliance benchmarks.

Software & Data Management

Data output is supported via standard RS-232 serial interface (configurable baud rates: 9600–115200) and optional USB-to-serial adapter for direct integration with LIMS, ELN, or custom QC databases. The balance transmits ASCII-formatted weight strings including timestamp (when enabled), unit identifier (g), and status flags (e.g., stable/unstable, overload, calibration due). Optional PC software—such as AND’s WinCT series—enables real-time graphing, statistical analysis (mean, SD, CV%), and automated report generation compliant with ISO/IEC 17025 clause 7.7 on result reporting. Audit trail functionality records all critical events: power cycles, calibration actions, parameter changes, and user logins—each with UTC timestamp and operator ID.

Applications

• Raw material verification and batch release testing in pharmaceutical manufacturing (aligned with USP and EP 2.1.1)
• Formulation preparation and excipient dispensing in R&D laboratories
• Calibration of pipettes and volumetric glassware per ISO 8655
• Moisture content determination via gravimetric loss-on-drying protocols
• Quality assurance sampling in food, chemical, and polymer processing facilities
• Educational demonstrations of metrological uncertainty, repeatability assessment, and calibration hierarchy

FAQ

What calibration standards are recommended for the GF-6002A?
Certified Class M2 or better weights meeting ISO 9001 calibration intervals are recommended; annual recalibration by an ISO/IEC 17025-accredited provider is advised for regulated environments.
Does the GF-6002A support internal calibration?
No—it is externally calibrated only, which enhances long-term stability and simplifies validation documentation for GxP audits.
Can the balance operate in environments with temperature fluctuations?
Yes, but optimal performance is achieved within 15–30 °C at ≤80% RH non-condensing; built-in temperature compensation mitigates drift within this range.
Is the RS-232 interface compatible with modern Windows/macOS systems?
Yes, when used with a certified USB-to-serial adapter and standard terminal emulation software (e.g., Tera Term, PuTTY) or AND’s WinCT suite.
How is repeatability verified during routine operation?
By performing ≥10 consecutive weighings of a stable test weight (e.g., 500 g or 5000 g) under identical environmental conditions and calculating standard deviation—expected value ≤0.01 g per ISO 8655-6.