METTLER TOLEDO MX204/A Analytical Balance

Overview

The METTLER TOLEDO MX204/A Analytical Balance is an ISO/IEC 17025–aligned precision weighing instrument engineered for laboratories requiring high reproducibility, regulatory traceability, and ergonomic operational integrity. Based on electromagnetic force compensation (EMFC) transduction, the MX204/A delivers stable, drift-compensated mass measurement under variable environmental conditions—including air currents, temperature gradients, and vibration—enabled by its patented SmartPan™ weighing pan geometry and integrated active damping algorithm. With a maximum capacity of 220 g and certified readability of 1 mg (per OIML R 76 and NIST Handbook 44), the balance achieves a typical repeatability of 0.05 mg at full load and supports minimum weight determination per USP (0.1% tolerance, typical 100 mg). Its 2-second stabilization time ensures throughput efficiency without compromising metrological rigor—critical in QC release testing, reference standard preparation, and analytical method validation workflows.

Key Features

• SmartPan™ technology: Optimized pan geometry and airflow dynamics reduce settling time by up to 40% compared to conventional analytical balances, enabling reliable readings even in non-laminar environments.
• FACT (Fully Automatic Calibration Technology): Dual-temperature-sensor system triggers internal recalibration automatically when ambient temperature drift exceeds ±1.5 °C, maintaining accuracy across diurnal lab cycles without manual intervention.
• ErgoDoor™ motorized draft shield: Soft-close, height-adjustable front door with tactile feedback and programmable opening angle minimizes operator fatigue and reduces contamination risk during multi-step gravimetric procedures.
• GxP-ready firmware architecture: Supports user-level access control (up to 100 configurable accounts), electronic signatures, audit trail (21 CFR Part 11 compliant), and tamper-proof data export via encrypted USB or TLS-secured Ethernet.
• 7-inch capacitive TFT touchscreen: High-contrast interface with customizable home screen layouts, multilingual OS support (EN/DE/FR/ES/ZH/JP/KO), and gesture-based navigation optimized for gloved-hand operation.
• Energy-saving mode & daily verification: Auto-sleep after 15 min idle; built-in weight test routine verifies performance against internal reference masses prior to first use each day—documented in PDF report with timestamp and operator ID.

Sample Compatibility & Compliance

The MX204/A accommodates standard 90 mm diameter weighing vessels, including glass vials, aluminum pans, and ceramic crucibles. Its IP41-rated enclosure provides protection against solid objects ≥1 mm and vertically falling drops—suitable for general laboratory environments but not wet-process or high-humidity cleanrooms. The balance complies with international metrological standards including OIML R 76-1 (2021), EN 12602:2022, and ISO 9001:2015 Annex A.2 for measurement process control. For regulated pharmaceutical and biotech applications, it supports GLP/GMP-aligned documentation through integrated reporting templates aligned with ICH Q5E, USP , and EU Annex 15 requirements.

Software & Data Management

Embedded LabX® Lite software enables direct data capture, real-time statistical analysis (mean, SD, CV%, trend charts), and automated report generation in PDF or CSV format. All weighing events—including calibration logs, user logins, error codes, and stability status—are time-stamped and stored locally with SHA-256 hashing. Export options include secure SFTP, network printer integration (PCL6/PDF), and OPC UA-compatible industrial communication protocols. Optional LabX® Connect license extends functionality to cloud-based instrument fleet monitoring, remote diagnostics, and LIMS/SAP ERP integration via RESTful API.

Applications

• Pharmaceutical QC: Active pharmaceutical ingredient (API) assay, excipient blending uniformity, and dissolution tablet weight checks per USP .
• Chemical R&D: Stoichiometric reagent dispensing, catalyst loading quantification, and gravimetric titrant standardization.
• Materials science: Ash content determination (ASTM D3174), moisture loss on drying (ASTM E180), and density calculation via pycnometry.
• Environmental testing: Filter weight gain in particulate matter (PM_2.5/PM₁₀) analysis per EPA Method 201A.
• Academic research: Isotope ratio sample preparation, nanomaterial dosing, and microgram-scale synthesis yield assessment.

FAQ

What is the minimum weight requirement for USP compliance on the MX204/A?
For a 0.1% tolerance threshold, the typical minimum weight is 100 mg—verified using the balance’s built-in minimum weight function and traceable to NIST SRM 31a.
Does the MX204/A support 21 CFR Part 11 compliance out of the box?
Yes—audit trail, electronic signature, role-based access control, and data immutability are enabled by default in firmware version 2.12 or later.
Can the balance be integrated into a LIMS environment?
Yes—via Ethernet or USB-C, using standardized HL7, ASTM E1384, or custom JSON/XML schemas configured through LabX® Connect.
Is FACT calibration traceable to national standards?
FACT self-calibration uses internal reference masses certified to ISO/IEC 17025-accredited calibration certificates; external verification remains recommended annually per ISO/IEC 17025 Clause 6.5.
What environmental conditions affect stabilization time?
Stabilization remains ≤2 s within 15–30 °C ambient range and ≤70% RH; airflow velocity >0.2 m/s or vibration >0.5 µm peak-to-peak may extend settling by up to 1.5 s—mitigated by SmartPan™ and ErgoDoor™ configuration.