FRITSCH A-28 Dynamic Image Analysis System

Overview

The FRITSCH A-28 Dynamic Image Analysis System is a high-precision, laboratory-grade instrument engineered for simultaneous quantitative characterization of particle size distribution and morphological parameters—including aspect ratio, circularity, convexity, solidity, elongation, and symmetry—based on real-time digital imaging principles. Unlike static image analyzers or laser diffraction systems, the A-28 employs a true dynamic imaging methodology: particles flow continuously through a precisely illuminated measurement zone under controlled dry dispersion, enabling statistically robust sampling of thousands of particles per second. This approach eliminates sedimentation bias, agglomeration artifacts, and operator-dependent focusing errors common in batch-based microscopy. Designed and manufactured in Idar-Oberstein, Germany, the system complies fully with ISO 13322-2:2013 (“Particle size analysis — Image analysis methods — Part 2: Dynamic image analysis”), ensuring metrological traceability and regulatory acceptability in GLP, GMP, and ISO/IEC 17025 environments.

Key Features

• Dual telecentric optical architecture with four user-interchangeable high-resolution lenses (field-of-view ranges: 20–2.7 mm, 28–3.5 mm, 52–6.7 mm, and 150 µm–20 mm), enabling seamless coverage across the full 20 µm–20 mm measurement range without mechanical recalibration.
• 5-megapixel industrial CMOS sensor with global shutter and synchronized LED stroboscopic illumination, delivering distortion-free, high-contrast particle silhouettes at up to 30 frames per second.
• U-shaped automated sample feed channel with integrated concentration monitoring and adaptive flow-rate control, ensuring optimal particle separation and monolayer presentation during transit through the measurement zone.
• Real-time image acquisition and on-the-fly segmentation using adaptive thresholding and edge-detection algorithms optimized for irregular, angular, or highly reflective particles (e.g., metal powders, ceramic granules, catalyst pellets).
• SOP-driven operation via FRITSCH ISS software: pre-defined measurement protocols enforce consistent parameter selection (e.g., minimum pixel area, intensity thresholds, shape filters), supporting audit-ready workflows compliant with FDA 21 CFR Part 11 requirements when configured with electronic signatures and audit trail modules.
• FRITSCH Cloud Morphology Analytics platform enables secure remote data visualization, collaborative annotation, and comparative morphological trend analysis across multiple instruments or laboratories.

Sample Compatibility & Compliance

The A-28 is specifically optimized for dry, free-flowing particulate materials exhibiting low cohesion and moderate friability. It accommodates brittle solids (e.g., ground glass, sintered ceramics), granular agglomerates (e.g., fertilizer prills, pharmaceutical granules), irregular catalyst supports, metallic atomized powders, and food-grade particulates such as sugar crystals or roasted coffee fragments. The system excludes samples requiring liquid suspension (e.g., colloidal suspensions, emulsions) or those prone to electrostatic clumping without prior conditioning. All hardware and firmware conform to CE marking directives (EMC 2014/30/EU, LVD 2014/35/EU) and meet the essential requirements of ISO 13322-2 for dynamic image analysis instrumentation. Calibration verification is supported via NIST-traceable glass microsphere standards and optional reference particle sets certified per ISO 13320 Annex C.

Software & Data Management

FRITSCH ISS (Intelligent Sample System) software provides a unified interface for instrument control, measurement execution, raw image archiving, and multi-dimensional result export. Each measurement session automatically generates a timestamped project file containing original images, segmented masks, metadata (lens ID, exposure time, flow rate), and full statistical reports in PDF, CSV, and XML formats. Advanced filtering allows users to isolate subpopulations based on combined criteria—e.g., “circularity 500 µm”—to identify broken fragments or oversized contaminants. Audit trail functionality logs all user actions, parameter modifications, and report exports, satisfying documentation requirements for quality assurance departments operating under ISO 9001, ICH Q5, or USP <429> guidelines. Data encryption and role-based access controls are available for enterprise deployments.

Applications

The A-28 serves critical roles in R&D and QC laboratories across diverse sectors: in advanced ceramics manufacturing, it quantifies green-body particle packing homogeneity and detects milling-induced microfractures; in pharmaceutical development, it monitors granule attrition during fluid-bed drying and validates blend uniformity via morphological fingerprinting; in metallurgy, it characterizes spherical vs. satellite morphology in gas-atomized Ti-6Al-4V powder batches prior to additive manufacturing; in agrochemical production, it verifies granule integrity after tumbling and correlates shape descriptors with dissolution kinetics. Its ability to replace labor-intensive sieve cascade analysis—while delivering richer dimensional context—makes it indispensable for process optimization, supplier qualification, and failure root-cause investigations.

FAQ

Does the A-28 support wet dispersion?
No. The A-28 is exclusively configured for dry dispersion using gravity-fed or vibratory feed mechanisms. Wet dispersion requires a separate FRITSCH wet module (e.g., on the ANALYSETTE 28 ImageSizer).
Can I export raw image data for third-party analysis?
Yes. Original TIFF sequences and binary mask files are stored in standardized directories and accessible via Windows Explorer or network share; no proprietary lock-in applies.
How is calibration verified between measurements?
Calibration is maintained via lens-specific scaling factors stored in the ISS database. Daily verification uses certified reference spheres; long-term stability is tracked via built-in drift-monitoring routines that log focus consistency and illumination uniformity.
Is the system compatible with LIMS integration?
Yes. The ISS software supports ODBC-compliant database export and offers RESTful API endpoints for bidirectional communication with major LIMS platforms (e.g., LabWare, Thermo Fisher SampleManager, STARLIMS).
What training and service options are available?
FRITSCH provides on-site installation qualification (IQ), operational qualification (OQ), and comprehensive user training covering SOP development, troubleshooting, and compliance documentation. Global service contracts include remote diagnostics, preventive maintenance, and priority spare parts logistics.