A&D MX-50 Halogen Moisture Analyzer

Overview

The A&D MX-50 Halogen Moisture Analyzer is a precision laboratory instrument engineered for rapid, gravimetric determination of moisture content in solid, semi-solid, and powdered samples using the loss-on-drying (LOD) principle. Unlike traditional oven-based methods requiring hours, the MX-50 employs a high-power (400 W), straight-tube halogen lamp combined with A&D’s proprietary Secondary Radiation Assistance (SRA) technology to deliver uniform, controllable thermal energy—accelerating drying kinetics while maintaining measurement integrity. The system integrates a high-stability SHS (Super Hybrid Sensor) weighing mechanism with 0.001 g readability, enabling reliable quantification of moisture loss even for small sample masses (≤51 g). Designed and manufactured in Japan under strict ISO 9001 quality management protocols, the MX-50 serves as a validated alternative to ASTM E1064, ISO 712, USP <921>, and AOAC Official Methods, particularly where throughput, repeatability, and regulatory traceability are critical.

Key Features

• Secondary Radiation Assistance (SRA) heating architecture ensures rapid, spatially homogeneous heat distribution—reducing average measurement time by up to 40% versus conventional halogen systems.
• SHS high-resolution weighing sensor provides 0.001 g repeatability and low drift performance across environmental fluctuations (5–40 °C, ≤85% RH).
• Five programmable measurement modes: Standard (auto-termination by precision level), Automatic (termination at user-defined moisture change rate), Rapid (initial 200 °C burst for 3 min), Timer-based, and Manual.
• Four drying profile options: Standard (instant ramp), Progressive (gradual temperature ramp), Stepwise (multi-stage temperature/time segments), and Quick Dry (200 °C preheat + hold).
• Pre-configured calibration verification using certified sodium tartrate dihydrate (15.66 ± 0.2 % w/w moisture)—traceable to NIST-traceable reference materials.
• GLP/GMP-compliant data logging: full audit trail including date/time stamp, operator ID, calibration history, method parameters, and raw weight vs. time datasets.
• Ergonomic sample chamber design with winged lid handle and heat-resistant sample pan grip minimizes operator exposure during hot-sample handling.
• Halogen lamp module (rated lifespan: ~5,000 h) is field-replaceable without system downtime or recalibration.

Sample Compatibility & Compliance

The MX-50 accommodates diverse physical forms—including granules, powders, pastes, films, and low-viscosity liquids—within its 85 mm diameter stainless-steel sample pan. Its adjustable temperature range (50–200 °C) supports thermally sensitive matrices (e.g., pharmaceutical actives, dairy powders) as well as robust industrial feedstocks (e.g., mineral ores, polymer resins). All measurement procedures adhere to internationally recognized standards: ASTM D4442 (wood moisture), ISO 11875 (plastics), ISO 12099 (animal feed), and USP <921> (pharmaceutical residual solvents). Data export meets FDA 21 CFR Part 11 requirements when used with WinCT-Moisture software configured for electronic signatures and audit-log retention.

Software & Data Management

WinCT-Moisture software (Windows-compatible, included) enables real-time graphical monitoring of mass loss kinetics, dynamic moisture curve fitting, and method optimization via slope analysis. Up to 20 custom measurement protocols—including drying profiles, termination criteria, and display units (moisture %, dry basis %, wet/dry ratio)—can be stored onboard and synchronized with PC. Measurement results (n = 100) are timestamped, annotated with operator ID, and exportable in CSV or PDF formats—with optional GLP report templates compliant with ISO/IEC 17025 and ICH Q5C. RS-232C interface supports bidirectional communication with LIMS or ERP systems and direct printing to serial label or thermal printers.

Applications

The MX-50 delivers validated moisture quantification across regulated and industrial sectors: In pharmaceutical QA/QC, it verifies moisture in APIs, excipients, tablets, and lyophilized products per USP <921>. In food manufacturing, it monitors water activity-critical stages—from cereal milling and spice blending to confectionery coating and pet food extrusion. Chemical and polymer labs use it for catalyst hydration control, resin curing validation, and solvent residue screening. Feed mills apply it for grain moisture compliance (AOAC 950.46), while paper and tobacco processors rely on its reproducibility for process moisture setpoint alignment. Environmental and academic labs deploy it for soil hygroscopicity studies and biomass characterization under ISO 18134-2.

FAQ

What calibration standard is recommended for routine accuracy verification?
Sodium tartrate dihydrate (CAS 6381-59-5), certified at 15.66 ± 0.2 % w/w moisture, is the primary reference material specified by A&D for daily performance checks.
Is the MX-50 compliant with FDA 21 CFR Part 11 requirements?
Yes—when operated with WinCT-Moisture v3.0+ and configured with user authentication, electronic signatures, and immutable audit trails, the system satisfies electronic record and signature provisions.
Can the instrument measure moisture in liquid samples?
Yes—using shallow pans and low-temperature drying protocols (e.g., 50–80 °C) to minimize splattering or volatile loss unrelated to water.
What is the typical service life of the halogen lamp?
Approximately 5,000 operating hours under normal usage; replacement is tool-free and does not require recalibration.
Does the MX-50 support network connectivity or Ethernet integration?
No—it features RS-232C only; Ethernet or USB connectivity requires external serial-to-Ethernet converters validated for lab-grade data integrity.