Adam PMB Series Infrared Moisture Analyzer

Overview

The Adam PMB Series Infrared Moisture Analyzer is a thermogravimetric instrument engineered for rapid, reliable, and repeatable moisture content determination in solid and semi-solid samples. It operates on the principle of loss-on-drying (LOD): a halogen lamp heats the sample uniformly while an integrated high-precision analytical balance continuously monitors mass loss in real time. The instrument calculates moisture percentage by comparing initial and final mass under controlled thermal conditions. Designed for routine QC laboratories, raw material inspection, food processing, pharmaceutical manufacturing, and polymer quality control, the PMB delivers traceable, GLP-compliant results without requiring operator intervention beyond initial method selection. Its dual-function architecture—combining precision weighing and programmable infrared drying—eliminates the need for separate balance and oven systems, reducing workflow complexity and inter-instrument variability.

Key Features

• Halogen heating system (400 W): Provides rapid, uniform thermal energy with precise temperature control from 50 °C to 160 °C in 1 °C increments—enabling optimization for heat-sensitive or refractory materials.
• Multi-profile heating modes: Supports Standard (constant temperature), Step (multi-stage temperature ramping), and Ramp (linear gradient) protocols to accommodate diverse sample matrices including powders, granules, pastes, and films.
• Intuitive navigation interface: Dedicated function keys and contextual menu prompts reduce training time; administrator-level access control restricts modification of calibration parameters, method settings, and system configurations.
• Dual communication architecture: Integrated RS-232 and USB serial ports support direct connection to PCs, LIMS, or PLCs; USB host functionality enables autonomous logging to FAT32-formatted flash drives—no third-party software required.
• Comprehensive data integrity tools: Each stored result includes timestamp, method ID, start/end temperatures, drying profile, final mass, moisture %, solids %, and stability status—supporting audit readiness per FDA 21 CFR Part 11 and ISO/IEC 17025 requirements.
• Optimized weighing performance: Models PMB 53 (50 g capacity, 1 mg readability) and PMB 202 (200 g capacity, 10 mg readability) feature draft shield-compatible 90 mm diameter pans and stabilization times under 4 seconds—ensuring throughput without compromising resolution.

Sample Compatibility & Compliance

The PMB Series accommodates a broad range of industrial and regulatory sample types—including active pharmaceutical ingredients (APIs), excipients, dairy powders, cereal grains, plastics resins, ceramics, and coated tablets. Its thermogravimetric methodology aligns with ASTM D4442 (wood moisture), ISO 712 (cereals), USP <921> (moisture content), and AOAC 952.08 (food). Built-in compliance features include password-protected method editing, electronic signature support for critical operations, and immutable audit trails for all calibration events and result exports. All units are CE-marked and manufactured under ISO 9001-certified processes at Adam Equipment’s UK facility.

Software & Data Management

No proprietary software installation is required: the PMB natively supports ASCII-formatted data streaming via RS-232 or USB CDC serial emulation. When connected to a USB flash drive, it automatically saves each test as a timestamped CSV file containing full metadata—ideal for integration into Excel-based QA workflows or automated data ingestion pipelines. Internal memory retains up to 99 complete test records and 49 user-defined methods, each preserving temperature setpoints, termination logic, display preferences, and language selection. Data export supports both real-time transmission and batch retrieval, facilitating alignment with laboratory information management systems (LIMS) and electronic lab notebooks (ELN).

Applications

• Pharmaceutical: Quantification of residual solvents and hydrate water in lyophilized products per ICH Q5C guidelines.
• Food & Agriculture: Moisture verification in flour, coffee beans, spices, and pet food to ensure shelf-life stability and regulatory labeling accuracy.
• Chemicals & Polymers: Monitoring hygroscopicity of catalysts, silica gels, and engineering thermoplastics during storage and processing.
• Academic Research: Method development for novel drying kinetics modeling and comparative thermal stability studies across material classes.
• Quality Control Labs: Routine release testing of incoming raw materials where SOP-driven repeatability and documentation traceability are mandatory.

FAQ

How does the PMB differ from traditional oven-drying methods?
It replaces subjective endpoint judgment with objective, real-time mass monitoring—reducing analysis time from hours to minutes while improving reproducibility and eliminating operator bias.
Can the PMB be calibrated internally?
No—it requires external calibration using certified weights traceable to national standards; however, calibration history and date-stamped logs are retained in non-volatile memory.
Is the halogen lamp replaceable by the user?
Yes—the lamp module is field-serviceable with standard tools and no recalibration is needed post-replacement.
Does the instrument support GMP-compliant electronic signatures?
While the PMB itself does not generate digital signatures, its structured data output and audit trail capabilities enable seamless integration with validated signature modules in downstream LIMS or ELN platforms.
What is the typical moisture repeatability for a 10 g pharmaceutical powder sample?
At optimal temperature and profile settings, repeatability is ≤0.05% RSD (n=10), consistent with USP <921> acceptance criteria for non-aqueous solvents.