METTLER TOLEDO ME1002E Precision Balance

Overview

The METTLER TOLEDO ME1002E Precision Balance is an entry-level analytical-grade instrument engineered for reliable, high-reproducibility mass measurement in routine laboratory, quality control, and educational environments. Utilizing METTLER TOLEDO’s proven electromagnetic force compensation (EMFC) transduction principle, the ME1002E delivers stable, drift-resistant weighing performance under variable ambient conditions. With a maximum capacity of 1200 g and readability of 0.01 g (10 mg), it meets ISO/IEC 17025 and USP requirements for non-regulated and semi-regulated applications where precision at the centigram level is essential—such as sample preparation, formulation checks, reagent dispensing, and gross weight verification prior to higher-resolution analysis. Its compact footprint, robust mechanical architecture, and factory-optimized thermal compensation ensure consistent operation across typical lab temperature gradients (10–30 °C) without frequent recalibration.

Key Features

• Electromagnetic force compensation (EMFC) sensor with automatic internal temperature compensation for long-term stability
• Backlit monochrome LCD display with intuitive icon-driven interface for rapid access to settings, units, and application modes
• Stainless steel weighing pan (180 mm × 180 mm) and die-cast aluminum housing with ABS top cover for chemical resistance and mechanical durability
• Integrated overload protection system safeguards the load cell against accidental overloading up to 150% of max capacity
• External calibration capability using standard weights compliant with OIML R111 Class M2 or better
• Adjustable leveling feet with integrated bubble level for rapid mechanical alignment on uneven surfaces
• RS232 serial port (standard) supports direct connection to printers or PCs for basic data logging; optional Bluetooth module enables wireless data transmission to compatible devices

Sample Compatibility & Compliance

The ME1002E accommodates a wide range of solid and granular samples—including powders, tablets, glassware, and small containers—within its 180 mm × 180 mm stainless steel pan. Its 1200 g capacity and 14 g minimum weight (per USP , 0.1% tolerance, k = 2) make it suitable for general-purpose weighing tasks in pharmaceutical QC labs, food testing facilities, and university teaching laboratories. While not certified for legal-for-trade use (e.g., NTEP or MID), the balance complies with ISO 9001 process documentation requirements and supports GLP/GMP-aligned workflows through traceable external calibration and user-accessible calibration logs. It is designed to operate within standard laboratory environmental specifications per ISO 17025:2017 Annex A.3—ambient temperature 15–25 °C, relative humidity ≤ 80% RH (non-condensing), and minimal air currents.

Software & Data Management

The ME1002E supports basic data output via ASCII protocol over RS232, enabling seamless integration with third-party LIMS or spreadsheet-based reporting systems. Each weighing event can be timestamped and prefixed with customizable identifiers (e.g., operator ID, batch number). Though it lacks built-in audit trail or electronic signature functionality, the device supports 21 CFR Part 11 readiness when paired with validated external software that manages user authentication, change control, and electronic records retention. Optional METTLER TOLEDO LabX Lite software (sold separately) provides enhanced data handling, statistical evaluation (mean, SD, %RSD), and PDF report generation—all while maintaining full traceability of calibration history, user actions, and environmental metadata.

Applications

• Preparation of standard solutions and reference standards in analytical chemistry labs
• Weighing of raw materials and intermediates in pharmaceutical manufacturing (non-GMP staging areas)
• Batch release testing of dietary supplements and cosmetics under ISO 22000 or HACCP frameworks
• Student experiments in general chemistry, biology, and materials science courses
• Inventory management and packaging verification in production support labs
• Calibration verification of lower-precision field instruments using certified reference weights

FAQ

Is the ME1002E compliant with 21 CFR Part 11?
No—the ME1002E does not include electronic signatures, audit trails, or role-based access control. However, when used with validated external software (e.g., LabX Lite with appropriate configuration), it can support Part 11–compliant data acquisition workflows.
What is the recommended calibration frequency?
Per ISO/IEC 17025 and manufacturer guidance, external calibration should be performed before first use, after relocation, following any mechanical shock, and at defined intervals (e.g., daily pre-use check with 100 g weight; full calibration weekly or per risk assessment).
Can this balance be used in a fume hood?
Yes—provided the unit is fully stabilized, airflow is minimized (<0.2 m/s at pan level), and the balance is mounted on a vibration-damped surface inside the hood. Avoid placing near exhaust slots or active sashes.
Does it support multiple weighing units?
Yes—g, kg, oz, lb, ct, and dwt are selectable via the front panel menu; tare and preset tare functions are available for sequential weighing.
Is the RS232 interface opto-isolated?
No—the integrated RS232 port is electrically isolated only to standard industrial levels (IEC 61000-4-5); for high-noise environments, use a shielded cable and ground the PC side appropriately.