METTLER TOLEDO MP90 Advanced Melting Point Apparatus

Overview

The METTLER TOLEDO MP90 Advanced Melting Point Apparatus is a fully automated, high-precision thermal analysis instrument engineered for pharmaceutical, chemical, and academic laboratories requiring reliable, reproducible determination of melting points and melting ranges. Based on the principle of transmission light intensity detection—where optical transmittance through a heated capillary sample is continuously monitored—the MP90 identifies phase transitions by detecting characteristic changes in light absorption as crystalline solids undergo solid-to-liquid transition. Operating across an extended temperature range from ambient to 400 °C, the system supports both single-point melting point verification and full melt range profiling with sub-degree resolution. Its compact benchtop architecture integrates precision thermal control, real-time imaging, and regulatory-compliant data handling—making it suitable for routine QC testing as well as method development under GLP/GMP frameworks.

Key Features

• One Click™ intuitive interface: Launch measurements with a single touch on the 7-inch capacitive touchscreen, minimizing operator training and reducing procedural variability.
• Six-capillary parallel measurement capability: Simultaneously process up to six standard melting point capillaries per heating cycle, improving lab throughput without compromising accuracy.
• High-resolution color video recording: Capture time-synchronized HD video of all capillary channels during heating; recordings are timestamped, searchable, and storable for up to 300 minutes on internal memory.
• Automated optical endpoint detection: Uses photometric analysis of transmitted light intensity to objectively identify onset, clear point, and intermediate stages of melting—eliminating subjective visual interpretation.
• Rapid thermal cycling: Achieves heating from 50 °C to maximum temperature in ≤5 minutes and cools from Tmax to 50 °C in ≤6 minutes, enabling efficient back-to-back analyses.
• Regulatory-ready data management: Supports 21 CFR Part 11 and EU Annex 11 compliance when paired with LabX software, including electronic signatures, role-based access control, and tamper-evident audit trails.

Sample Compatibility & Compliance

The MP90 accepts standard 1.0 mm OD glass melting point capillaries (e.g., ASTM D1565–17 compliant), accommodating organic compounds, polymers, APIs, excipients, and metal alloys within its 400 °C upper limit. Each measurement requires only 1–2 mg of dry, finely powdered sample. The instrument meets ICH Q5A and USP guidelines for melting point determination in pharmaceutical quality control. All calibration and performance verification procedures align with ISO/IEC 17025 requirements for accredited testing laboratories. Optional IQ/OQ documentation packages are available for GxP environments, and firmware updates maintain alignment with evolving pharmacopeial standards (EP 2.2.17, JP 2.60, USP ).

Software & Data Management

Data acquisition and reporting are supported by two software tiers: LabX Express (included) for local operation, method storage, and PDF report generation; and LabX Server (optional) for networked deployment, centralized database management, and full 21 CFR Part 11 enforcement. LabX enables secure user authentication, customizable report templates, automatic backup to network drives, and integration with LIMS via standardized protocols (e.g., ASTM E1578, HL7). All raw video, thermograms, metadata, and audit logs are stored with immutable timestamps. Up to 100 test results—including reference substance comparisons—are retained locally, while the built-in library of 100 certified reference materials facilitates daily system suitability checks.

Applications

• Pharmaceutical QC release testing of active pharmaceutical ingredients (APIs) and finished dosage forms per USP/EP monographs.
• Polymorph screening and solid-state characterization during preformulation studies.
• Verification of chemical identity and purity assessment in synthetic organic chemistry labs.
• Educational use in undergraduate and graduate physical chemistry courses for teaching phase behavior principles.
• Material qualification in fine chemical manufacturing, including catalysts, dyes, and specialty intermediates.
• Stability-indicating method development where melt profile shifts correlate with degradation pathways.

FAQ

What capillary types are compatible with the MP90?
Standard 1.0 mm outer diameter, 0.1–0.2 mm wall thickness, sealed-end glass capillaries conforming to ASTM D1565–17 specifications.
Is external calibration required before first use?
No—factory calibration is traceable to NIST standards; however, users must perform initial system suitability verification using certified reference substances included in the onboard library.
Can video recordings be exported for external review?
Yes—recordings are saved in MP4 format and can be transferred via SD card, USB drive, or LabX network export for independent validation or regulatory submission.
Does the MP90 support multi-user environments with permission levels?
Yes—LabX Server enables hierarchical user roles (e.g., operator, supervisor, administrator) with configurable access to methods, reports, and system settings.
How is data integrity ensured during power interruption?
The MP90 features non-volatile memory that preserves ongoing measurements, calibration status, and audit trail entries—even during unexpected shutdowns.