Sartorius MA37-1CN Infrared Moisture Analyzer with Thermogravimetric Principle

Overview

The Sartorius MA37-1CN Infrared Moisture Analyzer is a thermogravimetric instrument engineered for rapid, reliable quantification of moisture content and solid (dry) residue in solid and semi-solid samples. It operates on the principle of loss-on-drying (LOD), wherein a precisely weighed sample is subjected to controlled infrared heating via a high-efficiency metal halogen heater. As volatile components—including water and low-boiling solvents—evaporate, the integrated high-resolution analytical balance continuously monitors mass loss in real time. The instrument automatically detects endpoint based on predefined criteria (e.g., mass change rate or absolute threshold), eliminating subjective judgment and ensuring method reproducibility across operators and shifts. Designed as a direct successor to the MA35 series, the MA37-1CN integrates enhanced thermal delivery, intuitive human-machine interaction, and robust compliance architecture—making it suitable for routine QC laboratories in regulated environments where traceability, audit readiness, and operational efficiency are non-negotiable.

Key Features

• High-power infrared heating system (480 W) enabling up to 2× faster drying cycles versus prior-generation models—reducing typical analysis time from >15 min to under 5 min for many pharmaceutical and food matrices.
• Capacitive full-color touchscreen interface with gesture-based navigation—designed without reliance on printed manuals; all functions accessible via intuitive swipe and tap gestures, consistent with modern industrial HMI standards.
• Dual-heating-zone geometry with uniform radiant energy distribution ensures isothermal sample exposure, minimizing thermal gradients and charring risk—critical for thermolabile substances such as APIs, excipients, and dairy powders.
• Modular sample pan assembly: interchangeable glass or FDA-compliant anodized aluminum inserts support both general-purpose and hygienic applications (e.g., HACCP-certified production lines).
• Integrated status LED indicator provides at-a-glance feedback on instrument state (standby, heating, cooling, measurement complete, error condition), reducing operator cognitive load during high-throughput workflows.
• BetterClean mechanical design minimizes crevices and enables tool-free disassembly of the heating chamber and weighing unit—facilitating rapid cleaning validation per GMP Annex 15 and ISO 14644-1 particle control requirements.

Sample Compatibility & Compliance

The MA37-1CN accommodates samples ranging from 0.100 g to 15.0 g, with optimal precision achieved at ≥5 g initial mass. It supports granular, powdered, pasty, and fibrous materials—including but not limited to active pharmaceutical ingredients (APIs), tablet coatings, polymer resins, cereal flours, coffee beans, and lyophilized biologics. Its thermogravimetric methodology aligns with internationally recognized reference standards: ASTM D4442 (moisture in wood), USP (Loss on Drying), ISO 712 (cereals and cereal products), and EN ISO 1445 (milk powder). When paired with optional YDP30/YDP40 thermal printers, reports include timestamped metadata, user ID, method ID, calibration history, and environmental conditions—fully compliant with FDA 21 CFR Part 11 electronic record/electronic signature (ER/ES) requirements. Audit trails, user access controls, and password-protected method editing are supported through firmware-level security protocols.

Software & Data Management

No proprietary software installation is required. Raw mass-vs.-time datasets export directly to Microsoft Excel via Mini-USB connection, enabling immediate statistical evaluation (e.g., RSD, confidence intervals, trend analysis). The onboard memory stores one user-defined method, including heating profile (ramp/hold), endpoint logic (auto/mg/%/time/manual), and result formatting (% moisture, % dry solids, ATRO ratio). All measurements retain embedded calibration timestamps and sensor diagnostics logs. For labs requiring centralized data governance, the MA37-1CN is compatible with Sartorius LabX® Lite (via optional USB-to-Ethernet bridge), enabling automated data archiving, electronic signature capture, and integration into LIMS or ERP systems.

Applications

This analyzer serves critical roles across regulated manufacturing and R&D settings: incoming raw material inspection (e.g., verifying moisture in lactose monohydrate per Ph. Eur. 2.2.32); in-process monitoring of fluid bed dryer output; stability study moisture mapping per ICH Q1A(R2); quality release testing of final dosage forms (tablets, capsules, ointments); and formulation development where solvent residue impacts dissolution kinetics or chemical stability. Its compact footprint (215 × 210.5 mm base) and low power draw (<640 VA) allow deployment on fume hoods, cleanroom benches, or mobile QC carts—supporting decentralized testing strategies without compromising metrological integrity.

FAQ

Does the MA37-1CN comply with 21 CFR Part 11?
Yes—when used with GLP-compliant reporting (enabled via printer or LabX Lite), it meets electronic record retention, audit trail, and electronic signature requirements.
Can I validate the temperature accuracy of the heating unit?
Yes—the instrument supports external calibration using Sartorius YTM01MA/YTM02MA temperature probes, traceable to NIST standards.
What is the minimum sample mass for valid results?
0.100 g is technically measurable, but ISO 5725-2 recommends ≥1 g for acceptable repeatability; ≥5 g is advised for regulatory submissions.
Is the balance internally calibrated?
No—it requires external calibration with a certified 50 g E2 class weight (supplied separately); automatic calibration prompts appear at user-defined intervals.
How does the MA37-1CN differ from the MA160 model?
The MA37-1CN is a single-method, entry-tier thermogravimetric analyzer optimized for speed and ease-of-use; the MA160 offers multi-method storage, advanced performance verification tools, and expanded connectivity options for enterprise-scale deployment.