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High performance and reliability
Mettler Toledo analytical balances are high-performance laboratory instruments designed for applications requiring extreme volumetric and mass precision, typically offering readabilities from 0.1mg down to 0.001mg. Utilizing Electromagnetic Force Compensation (EMFC) technology, these balances ensure accurate measurements by counteracting the weight of an object with an electromagnetic force.
Key technical features include a highly sensitive weighing cell protected by a draft shield to mitigate air currents, and integrated software solutions like LabX for seamless data management and GxP compliance. These balances support a variety of critical laboratory tasks, including sample preparation, formulation, and density determination, within a capacity range of 22 g to 520 g.
High-Performance Weighing Cells and EMFC Technology
The core of Mettler Toledo analytical balances is the high-performance weighing cell based on electromagnetic force compensation (EMFC) principles. This technical architecture allows the balance to measure the counter-force required to stabilize the weighing pan when a load is applied. By using best-in-class materials and precision engineering, these cells deliver exceptional linearity and repeatability. This ensures that even the smallest variations in mass are detected, providing the high resolution necessary for analytical chemistry and pharmaceutical research.
StaticDetect™ and Antistatic Solutions
Electrostatic charges are a major hidden source of weighing errors, often causing instability or drifted results. Mettler Toledo addresses this technically through patented StaticDetect™ technology, which detects the presence of electrostatic charges on the sample or container. If the charge exceeds a pre-defined limit, the balance warns the user. Integrated ionizer modules can then be used to neutralize these charges automatically, ensuring that the final result reflects the true mass of the sample without environmental interference.
SmartGrid™ Weighing Pan and Airflow Dynamics
The SmartGrid™ hanging weighing pan is an innovative technical design that minimizes the surface area exposed to air currents within the weighing chamber. Unlike traditional solid pans, the grid structure allows air drafts to pass through rather than pushing against the pan. This results in significantly faster stabilization times and higher measurement stability, even when operating in challenging environments like fume hoods. The hanging design also separates the weighing cell from the pan, protecting the internal mechanics from liquid spills and debris.
Automated Dosing and Sample Preparation
Advanced models like the XPR series can be upgraded with automated powder and liquid dosing modules. This technical integration transforms the analytical balance into a semi-automated workstation, reducing manual handling errors and increasing user safety when dealing with potent substances. Automated dispensing ensures high precision in concentration and formulation tasks, optimizing reagent use and streamlining the workflow for high-throughput laboratory operations.
LabX™ Software and Data Integrity
For laboratories requiring strict regulatory compliance (such as 21 CFR Part 11), Mettler Toledo integrates LabX™ laboratory software. This technical solution centralizes data management, ensuring that all weighing results and metadata are captured automatically in a secure database. LabX provides step-by-step user guidance on the balance terminal, manages SOPs, and ensures a full audit trail. This eliminates manual transcription errors and simplifies the process of achieving GxP compliance during audits.
FACT and ProFACT Internal Adjustment
To maintain accuracy over time, these balances feature Fully Automatic Calibration Technology (FACT) or ProFACT. This system automatically triggers internal adjustments based on pre-defined time intervals or detected changes in ambient temperature. Technically, this ensures that the balance remains calibrated even if environmental conditions fluctuate throughout the day. This automated process removes the need for manual testing with external weights, guaranteeing that the instrument is always ready for high-precision tasks.
Ergonomic Design and Motorized Doors
User efficiency and ergonomics are prioritized through features like motorized draft shield doors and the ErgoClip container holders. The motorized doors can be configured to open automatically via sensors, allowing for touchless operation and reducing the risk of cross-contamination. ErgoClips allow for the secure positioning of diverse tare vessels, such as round-bottom flasks or titration beakers, directly on the weighing pan. These technical enhancements reduce the physical strain of repetitive weighing and improve overall laboratory productivity.
Hygienic Design and Simplified Cleaning
The technical design of Mettler Toledo analytical balances emphasizes hygiene and ease of maintenance. The draft shields and weighing pans can be dismantled in seconds without the use of tools, and most components are dishwasher-safe. The interior of the weighing chamber is designed with smooth, gap-free surfaces to prevent the accumulation of residues. This "QuickLock" release mechanism ensures that the balance can be thoroughly cleaned to prevent sample carry-over, maintaining the integrity of sensitive analytical processes.
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