Scientific Industries Torbal AGN Series Automatic Internal Calibration Analytical Balance

Overview

The Scientific Industries Torbal AGN Series Analytical Balance is a precision laboratory instrument engineered for high-reproducibility mass measurement in regulated and research-intensive environments. Utilizing electromagnetic force compensation (EMFC) technology, the AGN series delivers stable, drift-compensated weighing performance across its full capacity range—100 g (AGN100) or 200 g (AGN200)—with a consistent readability of 0.0001 g (0.1 mg). Designed to meet ISO 9001 and ISO/IEC 17025 metrological requirements, each unit features an integrated motor-driven internal calibration mass and real-time temperature-compensated sensor architecture. This ensures traceable accuracy without operator intervention, eliminating manual calibration drift and reducing uncertainty contributions from environmental fluctuations. The balance operates within a controlled ambient temperature range of +15 °C to +30 °C and conforms to OIML R 76-1 Class I specifications for analytical applications requiring regulatory compliance.

Key Features

• Fully automatic internal calibration with motorized calibration mass—performed on power-up, at user-defined intervals, or manually via front-panel command
• 12 pre-programmed weighing modes: standard weighing, piece counting, animal weighing, checkweighing, hold display, percentage weighing, totalization, check counting, composite weighing, statistical quality control (SQC), and filtering
• 9 selectable units: kilogram (kg), carat (ct), pound (lb), newton (N), grain (gr), ounce (oz), troy ounce (ozt), pennyweight (dwt), and gram (g)
• High-contrast backlit LCD with center-zero indicator and intuitive icon-based navigation
• Robust die-cast metal housing with sealed front panel for dust and spill resistance
• Integrated leveling system with dual bubble vials and adjustable stainless-steel feet for rapid mechanical stabilization
• RS232 bidirectional serial interface as standard; optional USB, PS2, and RJ45 Ethernet connectivity for integration into LIMS or ELN platforms
• Zero tracking and auto-zero functions with programmable delay; tare range extends fully negative (–100 g / –200 g)

Sample Compatibility & Compliance

The AGN Series accommodates standard laboratory sample containers—including weighing boats, crucibles, and glass vials—on its 90 mm diameter stainless-steel weighing pan. Its compact footprint (216 × 345 × 347 mm) enables seamless integration onto fume hoods, laminar flow benches, or QC workstations. All models comply with international metrological standards including OIML R 76-1 Class I, ASTM E898–22 (Standard Practice for Use of Analytical Balances), and USP “Weights and Balances” requirements for pharmaceutical testing. The internal calibration mechanism satisfies FDA 21 CFR Part 11 audit trail prerequisites when paired with compliant data acquisition software, supporting GLP and GMP documentation workflows.

Software & Data Management

Data output is fully configurable via RS232 or USB protocols using ASCII-based command sets compatible with industry-standard terminal emulators (e.g., Tera Term, PuTTY) or custom SCADA/LIMS interfaces. Optional Torbal BalanceLink™ software provides timestamped data logging, statistical analysis (mean, SD, CV%, min/max), and export to CSV or Excel formats. Audit trail functionality—including user ID, timestamp, calibration event logs, and error codes—is enabled when connected to validated systems. Firmware supports firmware version verification, password-protected configuration changes, and factory reset safeguards to maintain integrity during multi-user deployments.

Applications

• Pharmaceutical formulation and active pharmaceutical ingredient (API) dosing per USP and
• Chemical synthesis quantification and stoichiometric reagent preparation
• Materials science powder density and composition analysis
• Environmental lab sample preparation for ICP-MS or GC-MS trace metal analysis
• Quality control laboratories performing SPC (Statistical Process Control) and Six Sigma initiatives
• Educational labs requiring ISO-traceable instrumentation for metrology training
• Food safety testing for allergen threshold validation and nutritional labeling compliance

FAQ

What does “automatic internal calibration” mean in practice?
It refers to the built-in motor-driven calibration mass that engages automatically—without external weights—to verify and adjust sensor gain and offset at predefined intervals or upon demand.
Is the AGN Series compliant with FDA 21 CFR Part 11?
Yes—when used with validated software (e.g., BalanceLink™ with electronic signature and audit trail modules), it meets electronic record and signature requirements for regulated environments.
Can the balance be integrated into a networked lab environment?
Yes—via optional RJ45 Ethernet interface or USB-to-Ethernet adapters, enabling centralized monitoring and remote diagnostics through TCP/IP protocols.
How often should internal calibration be performed?
Scientific Industries recommends calibration on startup, after significant ambient temperature shifts (>2 °C), and at least once per shift in continuous-use settings—configurable via menu settings.
Does the AGN Series support dynamic weighing (e.g., animal weighing)?
Yes—the animal weighing mode employs digital filtering and averaging algorithms to stabilize readings under low-frequency motion, with adjustable response damping.