METTLER TOLEDO XS203S Precision Balance

Overview

The METTLER TOLEDO XS203S is a high-performance precision balance engineered for laboratories requiring consistent 1 mg readability, rapid stabilization, and robust operational reliability under variable environmental conditions. Based on electromagnetic force compensation (EMFC) technology, the XS203S delivers traceable, drift-resistant measurements across its full 210 g capacity range. Its open-platform architecture—enabled by the patented SmartPan™ weighing pan—eliminates traditional draft shields without compromising accuracy, making it uniquely suited for use inside fume hoods, laminar flow cabinets, or standard benchtop environments where airflow turbulence would otherwise degrade repeatability. Designed in accordance with ISO 9001-certified Swiss manufacturing standards, the XS203S integrates mechanical stability, thermal inertia management, and advanced digital filtering to ensure measurement integrity even during extended daily operation.

Key Features

• SmartPan™ Technology: A dynamically balanced, removable weighing pan that reduces air current sensitivity by up to 50%, enabling stable 1 mg measurements without enclosure—critical for volatile, hygroscopic, or temperature-sensitive samples.
• FACT (Fully Automatic Calibration Technology): Built-in motorized internal calibration weights trigger automatic adjustment at user-defined intervals or upon temperature drift ≥1.5 °C, ensuring continuous traceability without manual intervention.
• ErgoStand™ Adjustable Base: Height- and tilt-adjustable support system aligned with ISO 11228-1 ergonomic guidelines to minimize upper limb strain during repetitive weighing tasks; validated to reduce operator fatigue in multi-shift laboratory workflows.
• LabX® Ready Interface: Native touchscreen integration with METTLER TOLEDO’s LabX software enables SOP-driven workflows, automated data capture, electronic signatures, and full audit trail generation compliant with FDA 21 CFR Part 11 and EU Annex 11 requirements.
• TestManager™ Embedded Routine Testing: Preconfigured daily verification protocols—including repeatability, eccentricity, and linearity checks—execute automatically and log results directly to internal memory or network storage, supporting ISO/IEC 17025 accreditation readiness.
• Hygienic Design: Seamless stainless-steel pan mount, smooth non-porous surfaces, and integrated spill containment tray allow rapid decontamination between samples—reducing cross-contamination risk in regulated QC/QA and pharmaceutical testing environments.

Sample Compatibility & Compliance

The XS203S accommodates solid, granular, and low-viscosity liquid samples within its 127 mm × 127 mm pan area. Its open configuration supports direct placement of beakers, crucibles, vials, and filtration assemblies without repositioning. The balance meets legal metrology requirements for non-automatic weighing instruments per OIML R 76-1 (Class II), and is verified for pharmacopeial compliance under USP (Accuracy and Repeatability) and (Weighing on Analytical and Precision Balances). All firmware and calibration records adhere to ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) for GxP-regulated environments.

Software & Data Management

Embedded TestManager™ performs scheduled performance verifications and stores raw test data with timestamps, operator IDs, and environmental metadata (e.g., ambient temperature, humidity). When connected to LabX software via Ethernet or USB, the XS203S supports real-time data streaming, customizable report templates (PDF/CSV/XLSX), role-based access control, and secure database archiving. Audit trails include full change history for method parameters, calibration events, and user actions—fully compliant with 21 CFR Part 11 electronic record and signature requirements. Optional remote monitoring via LabX Central enables centralized fleet management across multi-site laboratories.

Applications

• Pharmaceutical formulation: Accurate dispensing of active pharmaceutical ingredients (APIs) and excipients per ICH Q5C stability protocols.
• Quality control labs: USP-compliant content uniformity testing, loss-on-drying (LOD), and assay preparation.
• Academic research: Gravimetric preparation of standard solutions, catalyst loading, and stoichiometric reaction setup.
• Materials science: Density determination via pycnometry, powder flow characterization, and composite mixing ratio validation.
• Food & beverage QA: Net weight verification, moisture analysis sample preparation, and nutritional labeling compliance.

FAQ

What is the minimum weight requirement for reliable measurement per USP ?
The typical minimum weight is 1 g, calculated using the balance’s repeatability (0.5 mg at 200 g) and a safety factor of 2 as specified in USP .
Does the XS203S require external draft protection?
No—SmartPan™ technology eliminates the need for draft shields in most laboratory environments, including ISO Class 5 laminar flow hoods and standard fume cabinets.
How often does FACT calibration occur?
FACT initiates automatically when temperature changes exceed ±1.5 °C or at user-scheduled intervals (e.g., start-of-shift, pre-analysis); no manual calibration weights are required.
Is the XS203S compatible with LIMS or ERP systems?
Yes—via LabX software or direct ASCII output over RS232/Ethernet, supporting HL7, ASTM E1384, and custom API integrations.
Can the SmartPan™ be sterilized?
The SmartPan™ is autoclavable at 121 °C for 20 minutes; repeated sterilization does not affect mechanical integrity or measurement performance.