Brookfield Computrac MAX-5000XL Moisture, Solids, and Ash Analyzer

Overview

The Brookfield Computrac MAX-5000XL is a high-performance, thermogravimetric moisture, solids, and ash analyzer engineered for precision quantification of volatile content, non-volatile residue, and inorganic ash in solid and semi-solid materials. Unlike conventional infrared (IR) or halogen moisture analyzers that rely solely on surface heating and mass loss at fixed temperatures, the MAX-5000XL employs dynamic, programmable thermal profiling combined with real-time mass monitoring under controlled atmospheric conditions (including inert, oxidative, or ambient environments). Its core methodology is based on ASTM E1868 (Standard Test Method for Determining Moisture Content of Solid Waste by Thermogravimetric Analysis) and aligns with ISO 5725 (accuracy and precision of measurement methods) and USP (Water Determination). Designed for QC laboratories, R&D facilities, and regulatory-compliant manufacturing sites—including pharmaceutical, food, polymer, and battery material production—the instrument delivers traceable, repeatable results without requiring operator intervention during analysis.

Key Features

• Programmable multi-stage thermal ramping (up to 12 segments), enabling method-specific protocols for moisture evaporation, organic decomposition, and high-temperature ashing (up to 1000 °C)
• Integrated microbalance with ≤0.01 mg resolution and <0.1 % repeatability (RSD) across full 100 g capacity
• Atmosphere control system supporting nitrogen purge, air oxidation, or sealed ambient operation—critical for preventing oxidation artifacts or promoting complete carbon burnout
• Automated endpoint detection via slope-based algorithm (dW/dt) with configurable sensitivity, eliminating subjective visual judgment
• Robust stainless-steel furnace architecture with rapid thermal equilibration and ±0.5 °C temperature uniformity across sample zone
• Compliance-ready design: supports 21 CFR Part 11–compliant user access control, electronic signatures, and full audit trail generation

Sample Compatibility & Compliance

The MAX-5000XL accommodates heterogeneous samples ranging from hygroscopic powders (e.g., excipients, catalysts) to viscous pastes (e.g., electrode slurries, food emulsions) and fibrous matrices (e.g., cellulose, filter media). Sample pans are available in alumina, platinum, and quartz variants to ensure chemical inertness during high-temperature ashing. The system meets GLP/GMP documentation requirements and is validated per IQ/OQ/PQ protocols. It supports method transfer across global sites per ICH Q2(R2) guidelines and integrates seamlessly into LIMS environments via ASTM E1482-compliant data export (CSV, XML, PDF reports with embedded metadata).

Software & Data Management

Computrac Analyst™ software (v6.2+) provides intuitive method development, real-time thermal/mass curve visualization, and automated report generation compliant with FDA 21 CFR Part 11. All analytical runs store raw time–temperature–mass datasets with timestamped operator ID, instrument calibration status, and environmental sensor logs (chamber humidity, ambient pressure). Data integrity safeguards include write-once storage, cryptographic hash verification, and role-based permissions (Admin, Analyst, Reviewer). Export formats include ASTM E1382-compliant .trc files and machine-readable JSON for AI-driven trend analysis in predictive quality systems.

Applications

• Pharmaceuticals: Quantifying residual solvents and water content in APIs per ICH Q5C; validating lyophilization endpoints
• Battery Materials: Measuring moisture in cathode/anode powders (e.g., NMC, graphite) where ppm-level H₂O impacts electrolyte stability
• Food & Agriculture: Determining moisture and ash in cereals, dairy powders, and pet food per AOAC 950.46 and ISO 5984
• Polymers & Composites: Assessing volatiles in engineering resins and filler-loaded compounds prior to extrusion or molding
• Environmental Testing: Analyzing total solids, fixed/volatile suspended solids (TSS/VSS), and ash content in sludge per EPA Method 1684

FAQ

Does the MAX-5000XL comply with pharmacopeial standards for moisture testing?
Yes—it supports method validation per USP , Ph. Eur. 2.5.12, and JP 2.05, including forced-drying, vacuum-drying, and thermogravimetric modes.
Can it distinguish between water and other volatiles (e.g., ethanol, acetone)?
Not inherently via mass loss alone; however, coupling with optional FTIR or MS gas-phase analysis modules enables evolved gas identification—available as a custom integration path.
What calibration standards are recommended for routine verification?
NIST-traceable sodium tartrate dihydrate (15.66% w/w water) and calcium carbonate (for ash yield verification at 950 °C) are specified in the operator manual.
Is method development supported for proprietary materials?
Yes—software includes template-based method wizards, derivative curve overlays, and statistical comparison tools for DOE-driven optimization.
How does it handle samples prone to spattering or foaming?
The instrument supports programmable hold steps, reduced heating rates, and crucible lids with calibrated venting—minimizing mass-loss artifacts while maintaining regulatory defensibility.