METTLER TOLEDO Excellence Series Melting Point Systems MP70 and MP90
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Model | MP70 / MP90 |
| Temperature Range | RT to 350 °C |
| Heating Rate | 0.1–20 °C/min |
| Sample Capacity | Up to 6 capillaries per run |
| Compliance | USP <741>, Ph. Eur. 2.2.14, JP 17, ISO 11357-3, ASTM D1519 |
| Safety | Integrated optical monitoring with simultaneous transmittance measurement and reflected-light imaging |
| User Interface | One Click® color touchscreen with pre-stored method recall |
| Qualification Support | Factory-supplied IQ/OQ documentation and on-site qualification services available |
Overview
The METTLER TOLEDO Excellence Series Melting Point Systems MP70 and MP90 are fully automated, high-precision thermal analysis instruments engineered for reliable determination of melting point, melting range, and sliding melting point in pharmaceutical, chemical, and materials science laboratories. Based on the principle of controlled heating under optical observation, these systems employ a closed-furnace design with precise PID temperature regulation and real-time digital image capture. Unlike conventional analog melt point apparatuses, the MP70/MP90 integrate synchronized transmittance photometry and reflected-light video imaging—enabling objective endpoint detection without subjective visual interpretation. The furnace architecture ensures rapid thermal equilibration, minimal overshoot, and excellent temperature stability (±0.2 °C at 200 °C), critical for reproducible results across regulatory-compliant workflows.
Key Features
- Optical dual-mode detection: Simultaneous transmission and reflection imaging provides unambiguous phase transition identification—eliminating observer bias and improving inter-operator repeatability.
- One Click® intuitive interface: Pre-configured methods stored on the 7-inch full-color capacitive touchscreen allow single-tap initiation of validated protocols, reducing training time and procedural errors.
- High-throughput capability: Supports up to six capillary samples per run with independent thermal profiling; ideal for batch release testing or comparative polymorph screening.
- Closed-furnace thermal system: Delivers fast heating (up to 20 °C/min) and rapid cooling (ambient-to-RT in <10 min), minimizing turnaround time between analyses.
- Regulatory-ready architecture: Built-in audit trail, electronic signature support, and user access levels compliant with FDA 21 CFR Part 11 requirements when used with METTLER TOLEDO LabX software.
- Traceable calibration: Factory-certified temperature sensors (Pt100) with NIST-traceable calibration certificates supplied; optional annual recalibration services available.
Sample Compatibility & Compliance
The MP70 and MP90 accommodate standard 1.0 mm OD glass capillaries (1–3 mm sample length), compatible with crystalline organic compounds, APIs, excipients, polymers, and metal alloys exhibiting sharp or broad transitions. Both models meet pharmacopoeial requirements including USP , European Pharmacopoeia 2.2.14, Japanese Pharmacopoeia 17, and ISO 11357-3 for differential thermal analysis of thermoplastics. Instrument qualification is supported by comprehensive IQ/OQ documentation packages—including installation verification, operational performance tests (e.g., temperature accuracy across 50–350 °C), and system suitability checks using certified reference standards (e.g., indium, caffeine, potassium ferrocyanide). All systems undergo factory validation per GMP-aligned procedures prior to shipment.
Software & Data Management
When connected to METTLER TOLEDO LabX™ software, the MP70/MP90 enable centralized method management, automated report generation (PDF/CSV), and secure data archiving with full 21 CFR Part 11 compliance—including electronic signatures, role-based permissions, and immutable audit trails. LabX supports multi-instrument integration, allowing synchronized data collection from balances, pH meters, and other thermal analyzers within a unified platform. Raw video files (AVI format) and thermal profiles are time-stamped and embedded in reports for full traceability. Local standalone operation is also supported via the onboard firmware, ensuring continuity during network outages.
Applications
- Pharmaceutical quality control: Release testing of active pharmaceutical ingredients and finished dosage forms per ICH Q5A and Q5C guidelines.
- Polymorph characterization: Differentiation of solid-state forms (e.g., Form I vs. Form II) through precise melting onset and range analysis.
- Chemical purity assessment: Eutectic depression analysis for estimating impurity levels in organic synthesis intermediates.
- Materials R&D: Thermal stability evaluation of liquid crystals, waxes, resins, and bio-based polymers.
- Educational laboratories: Teaching core principles of phase transitions, thermal kinetics, and analytical validation in undergraduate and graduate curricula.
FAQ
What pharmacopoeial standards does the MP70/MP90 comply with?
USP , Ph. Eur. 2.2.14, JP 17, and ISO 11357-3 — all verified during factory OQ.
Can the instrument measure boiling point or cloud point?
The MP90 model supports boiling point and cloud point determination via optional accessories and dedicated method templates; MP70 is optimized for melting-only applications.
Is external PC connectivity required for routine operation?
No — all core functions operate autonomously via the integrated touchscreen; LabX connectivity is optional for advanced data governance and networked lab environments.
What is the typical calibration frequency recommendation?
Annual recalibration is recommended; however, users may perform intermediate verification using certified reference substances before each analytical campaign per GLP practice.
Are capillaries and reference standards supplied with the system?
Standard capillaries are included; certified reference materials (e.g., indium, tin) must be ordered separately to meet specific validation needs.
