METTLER TOLEDO MX105DU Analytical Balance

Overview

The METTLER TOLEDO MX105DU Analytical Balance is an ISO/IEC 17025–aligned precision weighing instrument engineered for laboratories requiring traceable accuracy, regulatory compliance, and operational efficiency in routine and critical mass measurement tasks. Operating on electromagnetic force compensation (EMFC) principle, the balance employs a high-stability monolithic sensor architecture with active temperature compensation to minimize drift and ensure consistent performance across ambient fluctuations. With a maximum capacity of 105 g and readability of 0.01 mg, it meets the stringent repeatability (≤ 0.01 mg standard deviation) and linearity (± 0.02 mg) requirements defined in USP for analytical weighing and for balance qualification. Its design integrates metrological rigor with practical workflow integration—supporting GLP/GMP-aligned documentation, automated calibration verification, and real-time status monitoring without compromising mechanical robustness or long-term stability.

Key Features

• SmartPan™ Anti-Vibration Technology: A patented draft shield-integrated weighing pan system that dampens airborne and structural vibrations, reducing stabilization time to ≤ 2 seconds—even in non-ideal laboratory environments (e.g., near HVAC vents or shared benches).
• StatusLight™ Visual Feedback System: A three-color LED ring at the front panel provides immediate, at-a-glance confirmation of balance readiness (green), warning (yellow), or error (red), minimizing operator interpretation errors and supporting lean lab practices.
• ErgoDoor™ Motorized Draft Shield: Fully automatic, soft-closing doors with programmable opening height and delay settings reduce physical strain during high-frequency weighing cycles and improve ergonomics for users performing repetitive tasks over extended shifts.
• Internal Motorized Calibration & Adjustment: Built-in motor-driven calibration mass ensures fully automated, temperature-triggered recalibration—eliminating manual intervention while maintaining traceability to internal reference standards compliant with ISO 9001 and ISO/IEC 17025 calibration management protocols.
• Energy-Efficient Architecture: Adaptive power management—including standby mode, scheduled shutdown, and low-power display backlighting—reduces energy consumption by up to 40% versus previous-generation analytical balances, aligning with institutional sustainability objectives without sacrificing responsiveness.

Sample Compatibility & Compliance

The MX105DU accommodates standard weighing vessels (crucibles, vials, filter papers) and supports static and dynamic weighing modes—including tare, parts counting, density determination, and percentage weighing. Its draft shield meets ISO 17025 environmental control recommendations for analytical balances (Class I or II labs per ISO 14644-1 cleanroom classifications). All firmware and hardware configurations support full GxP compliance when deployed with METTLER TOLEDO LabX software: user access levels are configurable (administrator, analyst, reviewer), audit trails record all weight events, method changes, calibration actions, and user logins with immutable timestamps. The balance satisfies data integrity requirements under FDA 21 CFR Part 11 when paired with electronic signatures and role-based permissions in LabX.

Software & Data Management

Direct connectivity via RS232, USB, Ethernet, and optional Bluetooth enables seamless integration into LIMS, ELN, and ERP systems. LabX software provides centralized method deployment, automated report generation (PDF/CSV), and electronic signature workflows compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate + Complete, Consistent, Enduring, Available). Raw weight data—including metadata (operator ID, timestamp, environment log, calibration status)—is transmitted in real time with no manual transcription. Optional barcode scanning allows sample ID auto-population, eliminating entry errors in high-throughput QC environments.

Applications

• Pharmaceutical quality control: Active pharmaceutical ingredient (API) assay, reference standard preparation, and content uniformity testing per USP .
• Academic and industrial research: Precise reagent dispensing for synthetic chemistry, catalyst loading, and nanomaterial formulation.
• Food and beverage testing: Moisture analysis sample preparation, nutritional labeling compliance, and additive dosage verification.
• Environmental laboratories: Filter weighing for particulate matter (PM2.5/PM10) analysis per EPA Method 201A and ISO 12141.
• Materials science: Electrode coating mass verification, battery cathode/anode slurry dosing, and thin-film deposition substrate weighing.

FAQ

What is the recommended calibration frequency for the MX105DU in a GMP environment?

Calibration intervals must be risk-assessed per your SOP and process criticality—but METTLER TOLEDO recommends daily performance checks using certified test weights and full internal calibration every 24 hours or before first use if idle overnight.
Does the MX105DU support external calibration with traceable weights?

Yes—the balance accepts external calibration via certified Class E2 or better weights and logs all manual calibration events with operator ID and timestamp in the audit trail.
Can the MX105DU be validated per IQ/OQ/PQ protocols?

Yes—METTLER TOLEDO provides complete validation documentation packages (including URS, DQ, IQ/OQ/PQ templates, and test scripts) aligned with Annex 15 and ASTM E2500.
Is the draft shield removable for cleaning or large-sample accommodation?

No—the ErgoDoor™ system is fixed but fully motorized; however, the entire draft shield assembly can be disassembled by authorized service personnel for deep cleaning or maintenance.
How does SmartPan improve weighing reliability in non-ideal lab conditions?

SmartPan uses dual-mass damping and adaptive signal filtering to suppress resonance frequencies induced by floor vibration or air currents—verified per ISO 11353:2021 for vibration resistance in analytical balances.