METTLER TOLEDO ME4001 Precision Balance
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Shanghai, China |
| Model | ME4001 |
| Instrument Type | Precision Balance |
| Maximum Capacity | 4200 g |
| Readability | 0.1 g |
| Repeatability | 0.1 g |
| Linearity | ±0.2 g |
| Calibration | Internal |
| Dimensions (W × D) | 180 × 180 mm |
| Construction | Reinforced metal frame with integrated leveling feet |
Overview
The METTLER TOLEDO ME4001 Precision Balance is an entry-level analytical-grade instrument engineered for routine laboratory and industrial weighing tasks requiring consistent accuracy, operational robustness, and long-term reliability. Based on electromagnetic force compensation (EMFC) technology, the ME4001 delivers stable, drift-resistant measurements across its full 4200 g capacity range with a readability of 0.1 g. Its design adheres to fundamental metrological principles defined in OIML R76 and ISO/IEC 17025—ensuring traceable performance under standard environmental conditions (20 ± 5 °C, <70 % RH, non-condensing). Unlike high-resolution analytical balances, the ME4001 prioritizes mechanical durability and ergonomic efficiency over sub-milligram resolution, making it suitable for QC sampling, formulation checks, packaging verification, and educational lab use where repeatability and ease of validation are critical.
Key Features
- Internal calibration system with one-touch activation—eliminates dependency on external weights and reduces procedural variability during daily verification.
- Reinforced metal frame and rigid housing structure—designed to withstand repeated mechanical stress, vibration, and incidental impact in shared lab or production floor environments.
- Ergonomic front-panel layout with large backlit LCD display (18 mm digit height)—optimized for legibility under varied lighting conditions and at viewing angles up to ±30°.
- Integrated front-mounted leveling feet with visual bubble indicator—enables rapid mechanical leveling without tools, supporting compliance with ISO 9001 calibration setup requirements.
- IP42-rated enclosure—provides protection against dust ingress and vertically dripping water, facilitating safe operation near wet benches or in controlled manufacturing zones.
- Auto-zero tracking and dynamic filtering algorithms—minimize influence of air currents and minor platform disturbances, improving measurement stability during manual sample handling.
Sample Compatibility & Compliance
The ME4001 accommodates standard laboratory containers—including weighing boats, beakers, and plastic vials—up to 180 mm in diameter. Its open pan geometry allows unobstructed access for spatula-based transfers and quick residue removal. The balance meets key regulatory expectations for non-critical weighing applications under GLP and GMP frameworks: internal calibration logs are timestamped and stored in non-volatile memory; no user-modifiable firmware parameters exist; and the device supports audit-ready documentation via optional RS232 or USB interface (cable sold separately). While not certified for FDA 21 CFR Part 11 compliance out-of-the-box, it satisfies baseline data integrity criteria when used with validated third-party data capture software compliant with ALCOA+ principles.
Software & Data Management
Data output is supported via standard RS232 serial protocol (ASCII format) or USB virtual COM port emulation—compatible with LabX Lite (free), Excel-based macros, LIMS integrations, and custom SCADA systems. Output includes weight value, unit, stability flag, and timestamp (when connected to a time-synchronized host). Internal memory retains up to 99 calibration events with date/time stamps and operator ID fields (if enabled via host software). No onboard database or user account management is provided—consistent with its role as a deterministic, single-function measurement endpoint rather than a networked smart device.
Applications
- Quality control checks in pharmaceutical secondary packaging (e.g., blister pack count verification, carton gross weight validation).
- Raw material receipt inspection in food and chemical manufacturing per ASTM E122-22 sampling guidelines.
- Student laboratory exercises in general chemistry and materials science curricula requiring reproducible mass determination at 0.1 g resolution.
- Inventory reconciliation and warehouse receiving workflows where traceability to national standards is required but microgram-level precision is unnecessary.
- Environmental monitoring field labs performing soil/sediment sample partitioning prior to ICP-MS analysis.
FAQ
What is the difference between “readability” and “repeatability” for this balance?
Readability refers to the smallest increment displayed (0.1 g); repeatability quantifies the standard deviation of repeated measurements of the same load under identical conditions (also 0.1 g), confirming short-term precision.
Can the ME4001 be used in a fume hood?
Yes—its IP42 rating and absence of volatile internal components allow safe operation in ventilated enclosures, though airflow must be minimized during weighing to maintain stability.
Is external calibration required after internal calibration?
No—internal calibration fulfills routine verification per ISO/IEC 17025 §6.5.2; however, periodic external calibration using NIST-traceable weights is recommended annually or per organizational SOP.
Does the ME4001 support multiple weighing units?
Yes—it natively displays grams (g), kilograms (kg), ounces (oz), and pounds (lb), with unit selection configurable via front-panel menu.
How is level adjustment verified?
A built-in spirit level with illuminated bubble indicator is visible adjacent to the pan; leveling is confirmed when the bubble rests fully within the engraved circle.
