Yoke DSH-50A-5 Halogen Moisture Analyzer

Overview

The Yoke DSH-50A-5 Halogen Moisture Analyzer is a precision thermal gravimetric instrument engineered for rapid, reliable quantification of moisture content in solid and semi-solid materials via halogen lamp-assisted drying and high-stability weighing. Operating on the principle of loss-on-drying (LOD), the analyzer heats samples uniformly using a focused halogen radiation source, driving off volatile components—including free and bound water—while continuously monitoring mass loss with a high-resolution, thermally isolated load cell. This method conforms to widely accepted standard practices defined in ASTM E1447, ISO 18810, and USP <921> for moisture determination, offering an efficient alternative to classical oven-drying techniques without sacrificing metrological traceability or analytical rigor.

Key Features

• Halogen heating system delivering rapid, uniform thermal energy with precise temperature control (50–160 °C in 1 °C increments), enabling accelerated drying cycles while minimizing thermal degradation of heat-sensitive matrices.
• High-stability weighing module with 5 mg readability and integrated thermal isolation, ensuring minimal drift during extended heating periods and supporting repeatability of ±0.3% RSD (n=3, 3 g sample).
• Backlit dot-matrix LCD display optimized for low-ambient lighting conditions, presenting real-time moisture %, solids %, residual weight, elapsed time, and drying curve progression.
• Dual endpoint detection: user-defined timed mode (1–99 min, 1-min resolution) and intelligent automatic mode that terminates measurement upon stabilization of mass change rate (Δm/Δt < threshold).
• Ergonomic membrane keypad interface with tactile feedback, designed for glove-compatible operation in QC laboratories and production environments.
• Standard RS232 serial interface compliant with industry protocols, supporting bidirectional communication with LIMS, statistical process control (SPC) software, and thermal printers for GLP/GMP-compliant data archiving.

Sample Compatibility & Compliance

The DSH-50A-5 accommodates a broad range of industrial and regulatory-grade samples—including pharmaceutical excipients, active pharmaceutical ingredients (APIs), powdered foodstuffs, polymer granules, ceramic precursors, and agricultural commodities—within its 50 g maximum capacity and 100 mm stainless-steel sample pan. Its compact footprint and robust mechanical architecture meet requirements for routine use in ISO/IEC 17025-accredited testing labs. The instrument supports audit-ready documentation when paired with compliant software, fulfilling data integrity expectations under FDA 21 CFR Part 11 (with appropriate electronic signature configuration) and EU Annex 11 guidelines. Calibration verification procedures align with manufacturer-recommended intervals and can be integrated into laboratory quality management systems (QMS) per ISO 9001 and ICH Q2(R2).

Software & Data Management

While the DSH-50A-5 operates autonomously with embedded firmware, its RS232 port enables seamless integration with third-party data acquisition platforms. Raw output includes timestamped moisture %, initial/final mass, drying duration, set temperature, and stability status—structured for direct import into Excel, JMP, or validated laboratory informatics systems. When deployed in regulated environments, users may implement external validation packages to establish electronic record retention, user access controls, and audit trail generation. The absence of proprietary cloud services ensures full data sovereignty and simplifies IT security assessments required under HIPAA, GDPR, or internal cybersecurity policies.

Applications

• Pharmaceutical manufacturing: moisture verification of tablet granules, lyophilized powders, and capsule fill before compression or packaging per USP <921>.
• Food quality assurance: rapid batch release testing of flour, dairy powders, coffee grounds, and pet food for shelf-life prediction and microbial risk mitigation.
• Chemical and polymer industries: monitoring residual solvent in monomers, catalyst drying efficiency, and hygroscopicity of additives.
• Building materials: quantifying moisture in gypsum board, cement admixtures, and insulation composites to ensure dimensional stability and compliance with ASTM C561.
• Academic and contract research labs: method development for LOD optimization across diverse sample matrices under controlled environmental conditions.

FAQ

What standards does the DSH-50A-5 comply with for moisture analysis?

It supports methodologies aligned with ASTM E1447, ISO 18810, USP <921>, and AOAC 952.09—though formal certification requires lab-specific method validation.
Can the instrument perform multi-step heating programs?

No—the DSH-50A-5 implements a single-stage standard heating profile; programmable ramp/soak sequences require higher-tier models.
Is calibration traceable to national standards?

Yes—external calibration using NIST-traceable weights and certified reference materials (CRMs) is recommended at installation and quarterly thereafter.
Does it support GLP-compliant reporting out-of-the-box?

The device outputs raw data via RS232; GLP-compliant reports require integration with validated software that provides audit trails, electronic signatures, and secure storage.
How is zero-point drift compensated during long-duration tests?

The unit features automatic zero-tracking compensation and allows manual tare reset during operation to maintain baseline accuracy across variable ambient conditions.