METTLER TOLEDO ME204T/02 Analytical Balance

Overview

The METTLER TOLEDO ME204T/02 Analytical Balance is a high-precision laboratory instrument engineered for routine analytical weighing tasks requiring consistent accuracy, traceability, and operational efficiency. Based on electromagnetic force compensation (EMFC) technology, it delivers stable, drift-free measurements by dynamically balancing the gravitational force of the sample against a precisely controlled electromagnetic field. This principle ensures long-term stability, minimal thermal drift, and high reproducibility—critical for applications governed by ISO/IEC 17025, USP , and ASTM E898 standards. With a maximum capacity of 220 g and readability of 0.1 mg (100 µg), the ME204T/02 meets the performance criteria for Class I analytical balances per OIML R 76 and EURAMET cg-18 guidelines. Its robust mechanical architecture—including a die-cast metal base and reinforced housing—provides resistance to mechanical shock, ambient vibrations, and incidental exposure to common laboratory solvents and cleaning agents.

Key Features

• Electromagnetic force compensation (EMFC) weighing cell delivering high linearity, low hysteresis, and <0.08 mg repeatability under controlled environmental conditions.
• Internal calibration system with Fully Automatic Calibration Technology (FACT), which initiates temperature-triggered recalibration to maintain metrological integrity across diurnal ambient fluctuations.
• 4.5-inch full-color TFT touchscreen interface with intuitive icon-based navigation, large numeric display, and customizable home screen—designed for glove-compatible operation and reduced training overhead.
• Eight built-in application modes: piece counting, percentage weighing, formulation, checkweighing, density determination (with optional density kit), dynamic weighing, free-factor weighing, and summation—each compliant with documented procedures for GLP/GMP environments.
• Dual-interface connectivity: native USB and RS232 ports support direct integration with label printers, barcode scanners, LIMS workstations, and ERP systems; optional Bluetooth module enables wireless data transmission to PCs or mobile devices running METTLER TOLEDO LabX Lite software.
• Compliance-ready design: supports audit trail generation (when paired with LabX), user access control, electronic signature capability, and 21 CFR Part 11–compliant data handling protocols.

Sample Compatibility & Compliance

The ME204T/02 accommodates standard analytical sample vessels—including weighing boats, crucibles, vials, and filtration assemblies—within its draft shield chamber (dimensions: W 180 × D 180 × H 230 mm). Its draft shield features quick-release hinges and anti-static glass panels to minimize electrostatic interference during low-mass measurements. The balance conforms to international regulatory frameworks including ISO 9001 quality management requirements, ISO/IEC 17025 calibration laboratory accreditation criteria, and pharmacopeial specifications outlined in USP “Balances” and EP 2.1.7. All factory calibrations are traceable to national metrology institutes (e.g., METAS, NIST) via documented uncertainty budgets. Routine verification and adjustment can be performed using certified Class E2 or F1 weights per OIML R 111.

Software & Data Management

While the ME204T/02 operates autonomously via its embedded firmware, it interoperates seamlessly with METTLER TOLEDO’s LabX Lite software—a lightweight, PC-based platform enabling automated data capture, report generation, and basic compliance workflows. Raw weighing data—including timestamp, operator ID, balance status, and environmental metadata (if external sensors are connected)—is exported in CSV or PDF format with configurable fields. For laboratories requiring full 21 CFR Part 11 compliance, LabX Full Edition provides role-based user management, electronic signatures, secure audit trails, and integrated instrument qualification documentation (IQ/OQ/PQ templates). All data transfers adhere to TLS 1.2 encryption when transmitted over networked interfaces.

Applications

This analytical balance serves as a foundational tool across pharmaceutical QC labs, academic research facilities, contract testing organizations, and industrial R&D centers. Typical use cases include: quantitative preparation of reference standards and assay stock solutions; gravimetric analysis for titrant standardization; tablet weight variation testing per USP ; powder blending uniformity assessment; catalyst loading in synthetic chemistry; and density determination of solids and liquids using Archimedean principles. Its checkweighing function supports packaging line validation, while formulation mode enables multi-step recipe execution with real-time tolerance feedback—reducing transcription errors and supporting ALCOA+ data integrity principles.

FAQ

What is the recommended environment for optimal performance of the ME204T/02?

The balance should be installed on a vibration-isolated, level surface within a temperature-stable room (18–25 °C, ±2 °C/h), with relative humidity below 80% non-condensing and minimal air currents. Draft shields must remain closed during measurement.
Does the ME204T/02 support external calibration with user-provided weights?

Yes—manual external calibration is supported via the service menu, though internal FACT calibration is recommended for routine use to ensure thermal compensation integrity.
Can the balance be integrated into a validated computerized system?

Yes, when used with LabX Full Edition and configured according to METTLER TOLEDO’s validation support package, the system supports IQ/OQ/PQ execution and satisfies FDA and EMA expectations for regulated environments.
Is the touchscreen compatible with laboratory gloves?

The capacitive touchscreen is optimized for operation with standard nitrile or latex gloves; no stylus is required.
What maintenance intervals are recommended for routine operation?

Daily verification with calibrated test weights, weekly cleaning of the weighing pan and draft shield interior using lint-free wipes and ethanol (≤70%), and annual preventive maintenance by an authorized METTLER TOLEDO service technician.