OHAUS Adventurer AX125DZH Analytical Balance

Overview

The OHAUS Adventurer AX125DZH is a high-performance analytical balance engineered for precision mass measurement in regulated and research-intensive laboratory environments. Utilizing electromagnetic force restoration (EMFR) transduction technology, it delivers stable, drift-compensated readings with dual readability modes—0.01 mg (10 µg) and 0.1 mg—enabling flexible use across method-sensitive applications such as quantitative assay preparation, reference standard weighing, and USP -compliant minimum weight verification. Its robust mechanical architecture features a die-cast metal base for vibration damping, a corrosion-resistant stainless-steel weighing pan, and an integrated draft shield system designed to minimize air current interference without compromising ergonomic access. The balance operates within a controlled environmental envelope (10–30 °C, ≤80% RH non-condensing), ensuring thermal stability critical for sub-milligram repeatability.

Key Features

• Full-color 4.3-inch WQVGA capacitive touchscreen with intuitive icon-driven navigation and nine-language interface support (English, Chinese, Spanish, French, German, Italian, Portuguese, Japanese, Korean)
• Fully automatic internal calibration with motorized calibration mass deployment and real-time drift compensation
• Dual-range capacity configuration: 82 g at 0.01 mg readability or 120 g at 0.1 mg readability—switchable via menu without hardware modification
• Comprehensive environmental parameter adjustment: built-in temperature and humidity compensation algorithms, user-configurable auto-brightness and sleep timers
• Advanced operational safeguards: overload/underload visual alerts, dynamic stability indicator, calibration lock, menu password protection, and physical cover latch for audit-ready enclosure integrity
• Ergonomic draft shield assembly: modular two-part side doors and sliding top door (standard on 1 mg models), illuminated bubble level, four adjustable leveling feet, and front-mounted liquid-level indicator
• Underhook weighing capability for density determination and magnetic susceptibility measurements using optional accessories

Sample Compatibility & Compliance

The AX125DZH supports diverse sample forms—including powders, granules, liquids in tared vessels, and small solid components—via its 80 mm stainless-steel pan and configurable draft shield geometry. While not certified for legal-for-trade applications (e.g., NTEP, MID, or JIS), the balance meets technical requirements for GLP and GMP-aligned workflows. Its minimum weight performance (20 mg at 0.1% USP tolerance) and linearity error (±0.1 mg typical) are validated under ISO/IEC 17025-accredited test conditions. The device includes configurable audit trail logging when connected to OHAUS Logger software, supporting traceability for FDA 21 CFR Part 11–aligned data integrity protocols where electronic records are employed.

Software & Data Management

Data output is supported natively via RS232 and dual USB interfaces (device and host modes), enabling direct connection to printers, barcode scanners, or LIMS workstations. The balance exports ASCII-formatted weight data with timestamp, stability flag, and unit identifier—compatible with Excel, LabWare, and STARLIMS ingestion pipelines. Optional OHAUS Logger software provides centralized instrument configuration management, customizable report templates (PDF/CSV), and encrypted local storage of up to 1,000 weight events with operator ID tagging. All firmware updates are delivered via USB drive with SHA-256 signature verification to ensure supply-chain integrity.

Applications

• Quantitative preparation of pharmacopeial reference standards and working solutions (USP, EP, JP)
• High-accuracy formulation of catalysts, APIs, and excipients in R&D and QC labs
• Density determination of solids and liquids using Archimedean principles with optional density kit
• Dynamic weighing tasks including piece counting, percentage weighing, checkweighing, and accumulation
• Calibration lab support for secondary standard verification against primary mass artifacts
• Teaching laboratories requiring intuitive operation, multilingual UI, and pedagogical feedback (e.g., stability indicators, leveling prompts)

FAQ

Does the AX125DZH comply with USP for minimum weight determination?

Yes—its typical repeatability of 0.00002 g enables reliable minimum weight verification down to 20 mg at the 0.1% tolerance level specified in USP General Chapter .
Is external calibration required if internal calibration is performed daily?

Internal calibration maintains accuracy between scheduled external verifications; however, periodic traceable calibration using NIST-traceable weights (e.g., annually or per SOP) remains mandatory for ISO/IEC 17025 or GxP compliance.
Can the balance operate without the draft shield installed?

Yes, but readability and repeatability degrade significantly outside controlled airflow conditions; the shield is strongly recommended for all 0.01 mg measurements.
What is the function of the “calibration lock” feature?

It prevents unauthorized calibration initiation by requiring administrator-level password entry—supporting accountability in shared or audited lab environments.
Is the touchscreen compatible with gloved operation?

The capacitive display responds reliably to standard nitrile and latex gloves; sensitivity settings can be adjusted in the System Settings menu.