METTLER TOLEDO MX204/A Analytical Balance

Overview

The METTLER TOLEDO MX204/A Analytical Balance is a high-precision laboratory instrument engineered for demanding quantitative analysis in regulated and research-intensive environments. Operating on electromagnetic force compensation (EMFC) principle, it delivers trace-level mass measurement with 0.1 mg readability and exceptional short-term repeatability of 0.05 mg (typical). Designed for ISO/IEC 17025-compliant laboratories and GxP-regulated workflows—including pharmaceutical QC, chemical synthesis, and reference material preparation—the MX204/A integrates metrological rigor with operational intelligence. Its SmartPan™ draft shield design minimizes air current interference, reducing stabilization time to just 2 seconds even under non-ideal ambient conditions—a critical advantage in multi-user lab settings where throughput and consistency are interdependent.

Key Features

• SmartPan™ technology: Optimized pan geometry and integrated draft shield ensure rapid settling and improved robustness against convection currents and vibration.
• FACT (Fully Automatic Calibration Technology): Built-in motorized internal calibration weights enable temperature-triggered and time-scheduled recalibration without manual intervention—ensuring continuous traceability per ISO 9001 and ISO/IEC 17025 requirements.
• ErgoDoor™: Motorized front door with soft-close mechanism and programmable opening height reduces physical strain and improves workflow ergonomics during repetitive weighing tasks.
• 7-inch full-color TFT touchscreen: Intuitive icon-based interface supports multilingual operation, customizable user profiles, and context-sensitive help—reducing training time and operator error.
• Energy-saving mode: Automatically enters low-power state after configurable idle periods, compliant with EU Ecodesign Directive (Regulation (EU) No 1275/2013).
• IP41-rated enclosure: Provides protection against solid objects ≥1 mm and vertically falling drops—suitable for general laboratory use where dust or incidental splashes may occur.

Sample Compatibility & Compliance

The MX204/A accommodates samples up to 220 g with a 90 mm diameter weighing pan, supporting standard crucibles, volumetric flasks, filter papers, and small reaction vessels. Its minimum weight capability—10 mg (k=2, U=1%) and 100 mg (per USP ±0.1% tolerance)—is validated and documented for compliance with pharmacopeial standards. The balance meets essential regulatory expectations for data integrity: audit trails record all critical events (e.g., calibration, zeroing, user login/logout), while role-based user management enforces accountability in GLP/GMP environments. All electronic records comply with FDA 21 CFR Part 11 requirements when used with METTLER TOLEDO LabX® software or validated third-party LIMS integrations.

Software & Data Management

Native connectivity includes USB-A (for printers and storage devices), USB-C (for firmware updates and direct PC connection), Ethernet (for network deployment and remote monitoring), and optional Bluetooth for wireless peripheral pairing. Data export supports CSV, PDF, and XML formats with embedded metadata (timestamp, operator ID, balance ID, environmental conditions if logged). When paired with LabX software, the MX204/A enables automated SOP execution, electronic signature capture, real-time statistical process control (SPC), and seamless integration into enterprise systems via ODBC or RESTful API. Audit trail logs are immutable, time-stamped, and retain full history for inspection readiness.

Applications

• Pharmaceutical quality control: Active pharmaceutical ingredient (API) assay, excipient blending verification, and dissolution sample preparation per USP and EP 2.9.3.
• Chemical R&D: Stoichiometric reagent dispensing, catalyst loading, and gravimetric titration standard preparation.
• Academic and contract research labs: Stable isotope ratio analysis sample weighing, nanomaterial dosing, and certified reference material (CRM) handling.
• Environmental testing labs: Filter weighing for particulate matter (PM_2.5/PM₁₀) analysis per EPA Method 201A and ISO 12103-1.
• Food and beverage QA: Nutrient fortification verification, allergen cross-contamination checks, and moisture content determination by loss-on-drying.

FAQ

What is the difference between readability and accuracy on the MX204/A?
Readability refers to the smallest digit displayed (0.1 mg); accuracy is determined by calibration against traceable standards and includes linearity, eccentricity, and repeatability errors—typically verified annually per ISO/IEC 17025.
Does the MX204/A support GLP-compliant electronic signatures?
Yes—when operated with LabX software configured for 21 CFR Part 11 compliance, it supports tiered user roles, biometric or token-based authentication, and legally binding electronic signatures.
Can the balance be integrated into a centralized lab informatics system?
Yes—via Ethernet or USB-C, it supports direct communication with LIMS, ELN, and MES platforms using standard protocols including HL7, ASTM E1384, and METTLER TOLEDO’s proprietary EasyDirect™ interface.
Is FACT calibration sufficient for ISO/IEC 17025 accreditation?
Internal FACT calibration maintains ongoing performance; however, external verification using accredited weights at defined intervals (e.g., semi-annually) is required for full accreditation compliance.
How does SmartPan™ improve measurement reliability in non-climate-controlled labs?
By minimizing airflow-induced torque fluctuations around the weighing cell, SmartPan™ reduces sensitivity to drafts and thermal gradients—yielding stable readings faster and with lower standard deviation across repeated measurements.