METTLER TOLEDO MX104/A Analytical Balance

Overview

The METTLER TOLEDO MX104/A Analytical Balance is a high-precision laboratory instrument engineered for demanding quantitative weighing tasks in regulated and research-intensive environments. Based on electromagnetic force compensation (EMFC) technology, it delivers traceable, stable, and reproducible mass measurements with a readability of 0.1 mg and typical repeatability of 0.05 mg. Its 120 g maximum capacity and low minimum weight (10 mg at U = 1%, k = 2) make it suitable for micro- to semi-micro sample handling—particularly where accuracy, audit readiness, and operational efficiency are critical. The balance incorporates SmartPan™, an aerodynamically optimized weighing pan design that minimizes air current interference and reduces stabilization time to just 2 seconds—even under non-laminar airflow conditions common in open lab benches or near HVAC vents. This feature directly enhances throughput without compromising metrological integrity.

Key Features

• SmartPan™ technology for rapid stabilization and improved robustness against environmental turbulence
• FACT (Fully Automatic Calibration Technology) with internal motorized weights—ensures drift-free performance across temperature fluctuations
• 7-inch full-color TFT capacitive touchscreen with intuitive, icon-driven interface and multi-user support
• ErgoDoor™ front access door with smooth, low-force actuation—reduces operator fatigue and improves ergonomics during repetitive workflows
• Integrated energy-saving mode compliant with IEC 62301 standby power requirements
• Automated daily verification routines (e.g., Daily Test Plan) with configurable scheduling and pass/fail logging
• IP41-rated enclosure—provides protection against solid objects ≥1 mm and vertically falling water droplets

Sample Compatibility & Compliance

The MX104/A accommodates standard 90 mm diameter weighing vessels—including glass vials, aluminum pans, and ceramic crucibles—without requiring recalibration or mechanical adjustment. Its mechanical design and draft shield geometry meet ISO 9001 and ISO/IEC 17025 requirements for measurement uncertainty management. For pharmaceutical and biotech applications, the balance supports GxP compliance through built-in user management (role-based access control), electronic signatures (when paired with LabX software), and automated audit trails. It satisfies USP (balances) and (weighing procedures) criteria for minimum weight determination and repeatability assessment. All firmware and calibration records adhere to ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) and are compatible with FDA 21 CFR Part 11–compliant data governance frameworks when deployed with validated software.

Software & Data Management

Native connectivity includes USB-A (for printers and storage devices), USB-C (for direct PC tethering), and Gigabit Ethernet for network integration into centralized laboratory informatics systems. Optional Bluetooth enables wireless pairing with mobile devices for remote status monitoring. When connected to METTLER TOLEDO LabX™ software, the MX104/A supports fully automated data capture, customizable report generation (PDF, CSV, XML), electronic signature workflows, and secure database archiving. LabX enforces 21 CFR Part 11 compliance via role-based permissions, immutable audit logs, and cryptographic hash validation of all raw and processed weighing records. Exported datasets retain full metadata—including timestamp, operator ID, environmental conditions (if external sensors are integrated), and calibration history—ensuring full traceability from measurement to regulatory submission.

Applications

This analytical balance is routinely deployed in quality control laboratories for active pharmaceutical ingredient (API) assay, reference standard preparation, and dissolution testing sample dosing. It supports method development and validation per ICH Q2(R2), particularly in scenarios requiring low minimum weights and high repeatability. In academic and industrial R&D settings, it serves for catalyst loading, nanomaterial dispersion quantification, and gravimetric titration. Its ergonomic design and rapid stabilization also benefit teaching labs where student throughput and procedural consistency are prioritized. Additionally, the MX104/A meets OIML R76 and NIST Handbook 44 requirements for trade-related weighing—enabling dual-use deployment in production QA and metrology-critical calibration labs.

FAQ

What is the certified readability of the MX104/A, and how does it differ from its displayed resolution?
The MX104/A displays 0.1 mg resolution but carries a certified readability of 1 mg per OIML R76 Annex C, reflecting its metrological suitability for legal-for-trade applications under defined environmental and procedural constraints.
Does the MX104/A require external calibration weights for routine operation?
No—its FACT system performs fully automatic internal calibration using motorized reference masses; manual intervention is only required for periodic verification or after significant environmental shifts.
Can the MX104/A be integrated into a LIMS or ERP system?
Yes—via Ethernet or USB-C, using standard protocols (e.g., TCP/IP, HL7, or custom ASCII command sets); LabX provides preconfigured LIMS connectors for major platforms including Thermo Fisher SampleManager and LabWare LIMS.
Is the touchscreen interface glove-compatible?
The capacitive display supports operation with standard nitrile or latex gloves; however, conductive-tipped gloves yield optimal responsiveness.
How is minimum weight determined on the MX104/A?
Using built-in USP calculation tools—users input desired tolerance (e.g., 0.1% or 1%), and the balance computes the minimum weighable quantity based on actual repeatability data collected over time.