METTLER TOLEDO ME2002E Precision Balance
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Shanghai, China |
| Model | ME2002E |
| Instrument Type | Precision Balance |
| Maximum Capacity | 2200 g |
| Readability | 0.01 g |
| Repeatability | 0.01 g |
| Linearity | 0.02 g |
| Calibration Method | External (with standard weights) |
| Dimensions (W × D) | 180 × 180 mm |
| Construction | Reinforced metal frame with ergonomic housing |
Overview
The METTLER TOLEDO ME2002E Precision Balance is an entry-level yet rigorously engineered analytical weighing instrument designed for routine laboratory and quality control environments where consistent 0.01 g readability, operational robustness, and long-term stability are required. Built upon METTLER TOLEDO’s legacy of precision force compensation technology—utilizing electromagnetic force restoration principles—the ME2002E delivers high reproducibility across daily weighing tasks without requiring internal motorized calibration mechanisms. Its 2200 g maximum capacity supports a broad range of sample sizes, while the 0.01 g resolution satisfies ISO/IEC 17025-compliant mass measurement requirements for general QC workflows, including raw material verification, formulation checks, and packaging weight audits. The balance operates within standard ambient lab conditions (10–30 °C, ≤80% RH non-condensing), and its reinforced metal chassis ensures mechanical integrity under repeated loading cycles typical in production labs or teaching facilities.
Key Features
- Ergonomic design with front-access leveling feet and intuitive front-panel controls for rapid setup and daily operation
- Bright, backlit LCD display with large-digit numerals (18 mm height) optimized for visibility under variable lighting conditions
- External calibration capability using certified Class M2 or better weights—fully compliant with ISO 9001 and GLP documentation requirements
- Robust mechanical architecture: die-cast metal base and reinforced load cell housing minimize drift and enhance shock resistance
- One-touch tare and unit conversion (g, oz, ct, etc.) accessible without menu navigation
- Auto-zero tracking and dynamic damping algorithms ensure stable readings within 1.5 seconds after sample placement
- IP42-rated enclosure provides protection against dust ingress and incidental liquid splashes during cleaning
Sample Compatibility & Compliance
The ME2002E accommodates standard laboratory vessels—including beakers, weighing boats, and crucibles—up to 180 mm in diameter. Its open pan geometry allows unobstructed access for pipetting or powder dispensing. The balance meets essential metrological standards including OIML R76-1 (2006) for non-automatic weighing instruments and complies with national verification regulations applicable to Class II precision balances in China (JJG 1036–2008). While not equipped with built-in audit trail or electronic signature functionality, its external calibration protocol supports traceable recordkeeping when paired with documented weight certificates and manual log entries—sufficient for ISO 9001:2015 Clause 7.1.5 and basic GMP Annex 11 alignment in non-critical manufacturing steps.
Software & Data Management
The ME2002E operates as a standalone instrument with no embedded data logging or PC connectivity. All measurements are displayed locally only; no USB, RS-232, or Bluetooth interfaces are integrated. For laboratories requiring electronic records, third-party serial-to-USB adapters and lightweight terminal emulation software (e.g., Tera Term or HyperTerminal) may be used to capture real-time weight output via ASCII protocol. METTLER TOLEDO’s free LabX Lite software is not compatible with the ME series; however, users may implement validated spreadsheet-based data capture workflows adhering to ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate) when combined with time-stamped calibration logs and operator identification protocols.
Applications
- Raw material receipt inspection in pharmaceutical excipient and chemical manufacturing
- Batch weight verification in food and nutraceutical production lines
- Student laboratory exercises in general chemistry and biology curricula
- Inventory management and component counting in electronics assembly
- Preparation of standard solutions and buffer formulations in environmental testing labs
- Documentation of sample masses prior to thermal analysis (TGA/DSC) or elemental analysis (ICP-OES)
FAQ
Does the ME2002E support internal calibration?
No. It requires external calibration using certified reference weights—consistent with its classification as a precision (not analytical) balance.
Is the balance compliant with FDA 21 CFR Part 11?
No. It lacks electronic audit trail, user authentication, and secure data export features required for Part 11 compliance.
What is the recommended recalibration frequency?
Per ISO/IEC 17025:2017, recalibration should occur at least daily before first use—or more frequently if environmental fluctuations exceed ±2 °C or if mechanical shock is suspected.
Can it be used in a fume hood?
Yes, provided airflow velocity remains below 0.2 m/s at the pan surface and the unit is leveled post-installation.
What maintenance is required beyond calibration?
Weekly cleaning of the pan and surrounding housing with lint-free cloth and 70% isopropyl alcohol; annual verification of level sensor function and zero stability by qualified service technician.
