OHAUS Adventurer AX224ZH Analytical Balance

Overview

The OHAUS Adventurer AX224ZH is a high-precision analytical balance engineered for laboratories requiring consistent, traceable, and regulatory-compliant mass measurement at the 0.1 mg readability level. Based on electromagnetic force compensation (EMFC) transduction technology, the AX224ZH delivers stable, drift-resistant weighing performance under variable ambient conditions—critical for quantitative analysis in pharmaceutical QC, academic research, and materials science. Its 220 g maximum capacity and 0.0001 g resolution meet the operational requirements of ISO 17025-accredited testing labs performing gravimetric standard preparation, titrant calibration, and residual solvent analysis. The balance’s structural rigidity, temperature-compensated sensor architecture, and active damping system ensure rapid stabilization (<3 s typical settling time) without sacrificing metrological integrity.

Key Features

• Full-color capacitive touchscreen interface with intuitive icon-driven navigation—designed for glove-compatible operation and reduced training overhead.
• Integrated draft shield with optimized airflow geometry minimizes turbulence-induced noise while occupying minimal benchtop footprint—ideal for crowded fume hood or multi-instrument workstations.
• Internal motorized calibration system with automatic recalibration triggered by time, temperature drift (>1.5 °C change), or user-defined schedule—ensuring continuous traceability without manual weights.
• Dual USB ports: one dedicated to host-free data export directly to FAT32-formatted USB flash drives; the other supports firmware updates and optional peripheral integration.
• GLP/GMP-compliant data logging: timestamps, operator ID (via optional keypad or network login), balance ID, calibration history, and environmental metadata (if connected to optional temperature/humidity sensor) are embedded in each exported CSV file.
• Modular design with replaceable front panel and shield components—facilitating serviceability and long-term compliance with ISO/IEC 17025 maintenance requirements.

Sample Compatibility & Compliance

The AX224ZH accommodates standard analytical sample containers—including weighing boats, crucibles, volumetric flasks, and vials up to 120 mm in height—within its shielded chamber. Its pan diameter (90 mm) supports both small-volume precision dosing and larger solid samples without compromising center-of-gravity stability. The balance conforms to international metrological standards including OIML R76-1 (2018), ANSI/NCSL Z540.3, and EU Directive 2014/30/EU (EMC). All firmware and data handling protocols support audit readiness per FDA 21 CFR Part 11 when deployed with validated network authentication and electronic signature modules (sold separately). Routine verification procedures align with USP and ASTM E898–22 for analytical balance performance testing.

Software & Data Management

No proprietary software installation is required: raw weighing data exports natively as timestamped, comma-separated values (CSV) files containing weight value, unit, stability flag, date/time, operator code, and calibration status. Each file includes an embedded header with instrument serial number and firmware revision—enabling full chain-of-custody documentation. For enterprise deployment, the AX224ZH supports RS-232 and optional Ethernet connectivity (via accessory module), enabling seamless integration into LIMS or ELN platforms via ASCII command protocol (OHAUS Standard Protocol v3.2). Audit trails—comprising all calibration events, parameter changes, and user logins—are retained onboard for ≥10,000 entries and exportable upon request.

Applications

• Pharmaceutical: Active pharmaceutical ingredient (API) dispensing, reference standard weighing, dissolution tablet mass uniformity testing per USP .
• Chemistry: Gravimetric preparation of molar solutions, stoichiometric reagent quantification, and catalyst loading in catalysis studies.
• Materials Science: Density determination via pycnometry, ash content analysis, and moisture loss-on-drying (LOD) measurements.
• Food & Agriculture: Nutrient composition assays, pesticide residue quantification by GC-MS sample prep, and feed additive formulation.
• Environmental Testing: Filter weighing for PM2.5/PM10 particulate matter analysis per EPA Method 201A.

FAQ

Does the AX224ZH support external calibration with certified weights?
Yes—the balance accepts external calibration via Class E2 or better weights, with full traceability documentation stored in internal memory.
Can the USB data export be password-protected or encrypted?
Native USB export is unencrypted CSV; encryption and access control require integration with third-party LIMS or middleware compliant with NIST SP 800-171.
Is the touchscreen compatible with laboratory gloves?
Yes—the capacitive screen responds reliably to nitrile, latex, and cotton gloves rated ≤0.3 mm thickness.
What environmental conditions affect repeatability?
Repeatability remains within specification (±0.0001 g) at temperatures between 10–30 °C and relative humidity ≤80 % non-condensing, provided vibration isolation and draft-free placement are maintained.
How often does internal calibration occur by default?
Factory default triggers internal calibration every 2 hours and after any temperature shift exceeding ±1.5 °C—both parameters are configurable via service menu.