METTLER TOLEDO ML-T Series Precision Balance

Overview

The METTLER TOLEDO ML-T Series Precision Balance is an engineered solution for laboratories and industrial quality control environments requiring consistent, traceable mass measurement under variable operational conditions. Built around the patented MonoBloc® single-piece load cell architecture, this balance series delivers high mechanical stability and thermal independence—critical for minimizing drift in ambient temperature fluctuations common in non-climate-controlled labs or production floors. Its measurement principle relies on electromagnetic force compensation (EMFC), where the restoring force required to maintain zero displacement of the weighing pan is precisely quantified and converted into a digital mass reading with 0.01 g readability across capacities from 2000 g to 5000 g (with overload tolerance up to 6 kg). The inclusion of FACT (Fully Automatic Calibration Technology) ensures long-term accuracy by triggering internal recalibration automatically upon predefined temperature thresholds or time intervals—eliminating manual intervention while maintaining compliance with ISO/IEC 17025 calibration management requirements.

Key Features

• 4.5-inch capacitive color touchscreen interface with glove-compatible operation—optimized for use with cotton, nitrile, silicone, and rubber gloves without loss of responsiveness.
• LevelControl™ real-time leveling assistant provides visual step-by-step guidance on-screen when out-of-level condition is detected—reducing setup time and operator dependency.
• Integrated overload protection safeguards the MonoBloc® sensor against mechanical shock and accidental overloading up to 500% of nominal capacity, extending service life and reducing downtime.
• Dual power mode: operates continuously via AC adapter or up to 20 hours on a rechargeable lithium-ion battery—ideal for mobile QC stations, field testing, or temporary lab reconfigurations.
• IP54-rated enclosure protects internal electronics from dust ingress and incidental liquid splashes—ensuring durability in demanding manufacturing or warehouse environments.
• Pre-installed GWP® (Good Weighing Practice) guidance software supports risk-based weighing process validation per USP and EU Annex 11 requirements.

Sample Compatibility & Compliance

The ML-T Series accommodates standard laboratory vessels—including beakers, weighing boats, funnels, and sample containers—within its spacious 180 mm × 180 mm weighing pan. Its low-profile design minimizes air current interference during static weighing, while the draft shield-compatible form factor allows seamless integration with optional acrylic enclosures for microgram-level stability. All models comply with international metrological standards including OIML R76-1 (Class II precision), ISO 9001:2015 clause 7.6 (monitoring and measuring resources), and FDA 21 CFR Part 11 when paired with LabX® Lite software for electronic signature and audit trail generation. Traceability is maintained through factory-certified calibration certificates (NIST-traceable), each delivered with individual uncertainty budgets and environmental condition records.

Software & Data Management

While standalone operation requires no external software, the ML-T Series supports bidirectional data transfer via USB or RS232 interfaces. When connected to METTLER TOLEDO’s LabX® Lite software, users gain access to automated report generation, customizable SOP-driven workflows, and full electronic record retention—including timestamps, operator IDs, calibration logs, and deviation alerts. Audit trails are immutable and compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available). For regulated environments, optional firmware upgrades enable 21 CFR Part 11 user role management, electronic signatures, and secure password policies.

Applications

This balance series serves as a primary mass measurement tool in pharmaceutical formulation (e.g., active ingredient dispensing per batch records), food quality assurance (moisture content determination, recipe scaling), chemical synthesis (reagent dosing, catalyst loading), and academic research (sample preparation for HPLC, ICP-MS, or SEM analysis). Its robust construction and battery autonomy make it suitable for on-site raw material verification at supplier facilities, in-process checks on production lines, and educational labs where portability and ease of maintenance are critical. Routine tasks such as percentage weighing, density determination, parts counting, and net/gross/tare functions are pre-programmed and accessible with single-touch navigation.

FAQ

Does the ML-T Series support external calibration with certified weights?
Yes—external calibration is supported using Class M1 or better certified test weights, with full documentation export capability via USB.
Is FACT calibration traceable to national standards?
FACT internal calibration is not a substitute for external periodic verification but maintains short-term stability; traceability is retained through factory calibration certificates issued with NIST-traceable reference standards.
Can the balance store multiple user profiles?
User profiles are managed externally via LabX® Lite; the instrument itself supports operator ID entry per weighing event for audit purposes.
What is the operating temperature range?
10 °C to 40 °C with ≤80% RH non-condensing—performance specifications guaranteed within 15 °C to 30 °C.
How often does FACT initiate automatic recalibration?
By default, FACT triggers at ±1.5 °C temperature change from last calibration point or every 4 hours during continuous operation—adjustable via service menu.