METTLER TOLEDO XP Series Precision Analytical Balances
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Model Range | XP105DR, XP205, XP205DR, XP204, XP504, XP504DR |
| Maximum Capacity | 31 g / 120 g to 101 g / 520 g |
| Readability | 0.01 mg to 1 mg |
| Repeatability (sd) | 0.015 mg – 0.6 mg |
| Linearity Error | 0.1 mg – 0.5 mg |
| Eccentricity Error | 0.2 mg – 0.5 mg |
| Sensitivity Drift | 2 × 10⁻⁶ to 4 × 10⁻⁶ × Rnt |
| Temperature Coefficient of Sensitivity | 1 × 10⁻⁶ /°C × Rnt |
| Stability | 1 × 10⁻⁶ /a × Rnt |
| Typical Stabilization Time | 1.5 s – 2.5 s |
| Six Preloaded Applications | Weighing, Counting, Percentage, Density, Statistics, Formulation |
Overview
The METTLER TOLEDO XP Series Precision Analytical Balances are high-performance laboratory instruments engineered for trace-level mass determination in regulated and research-intensive environments. Based on electromagnetic force compensation (EMFC) technology, these balances deliver exceptional resolution, stability, and reproducibility across a broad dynamic range—from sub-milligram pharmaceutical actives to multi-hundred-gram reference standards. Designed and manufactured in Switzerland, each XP model complies with international metrological requirements defined in OIML R76 and adheres to the foundational principles of ISO/IEC 17025, USP , and ASTM E898. The series integrates advanced environmental compensation algorithms—including real-time temperature drift correction and air buoyancy modeling—to ensure consistent accuracy under variable lab conditions. With dual-range configurations (e.g., XP105DR, XP205DR, XP504DR), users achieve optimal signal-to-noise ratio across both ultra-low and high-load regimes without manual range switching—enabling seamless workflow continuity in QC laboratories, formulation development, and analytical method validation.
Key Features
- ProFACT Automatic Calibration: Fully motorized internal calibration system triggered by time intervals or temperature deviations (±1.5 °C), performing full linearity and sensitivity verification using certified internal weights—fully compliant with GLP/GMP audit requirements.
- SmartSens Infrared Detection: Contactless operation for draft shield door control, tare, print, and function activation—reducing contamination risk and mechanical wear in sterile or hazardous environments.
- SmartScreen Full-Color Touch Interface: Intuitive, icon-driven navigation with customizable home screen layouts and multilingual support (12 languages); meets IEC 61000-4-2 ESD immunity standards.
- SmartGrid Draft Shield Design: Optimized airflow management through precision-engineered grid geometry, reducing stabilization time by up to 40% compared to conventional sliding doors while maintaining Class I weighing performance per ISO 14413.
- DeltaRange Dual-Range Architecture: Simultaneous high-resolution (e.g., 0.01 mg) and extended-capacity (e.g., 120 g / 220 g) measurement modes—eliminating the need for separate micro and analytical balances in hybrid workflows.
- LevelControl Real-Time Monitoring: Integrated tilt sensor provides visual and audible alerts when leveling deviation exceeds ±0.5°, ensuring compliance with balance installation prerequisites outlined in USP and EUR Pharm 2.1.6.
- ErgoClips Modular Accessory System: Tool-free attachment of universal clamps, beaker holders, and static-dissipative platforms—supporting ISO 8519-compliant electrostatic mitigation during low-mass weighing.
Sample Compatibility & Compliance
The XP Series accommodates diverse sample formats—including powders, granules, liquids in volumetric flasks, coated tablets, and hygroscopic solids—via configurable pan geometries and optional anti-static ionizers. All models meet stringent regulatory expectations for data integrity: full 21 CFR Part 11 compliance is enabled through UserManagement with password-protected role assignment (Administrator, Supervisor, Operator), electronic signature logging, and immutable audit trails stored locally or exported via secure FTP. Calibration and performance verification records—including MinWeigh minimum weight assessment reports—are automatically timestamped and exportable in PDF/A-1 format. Units are supplied with factory-issued calibration certificates traceable to NIST and PTB standards, and optional IQ/OQ documentation packages support GxP facility qualification.
Software & Data Management
Embedded firmware supports seamless integration into enterprise laboratory systems via RS232C (standard) and expandable communication modules (Ethernet, Bluetooth, LocalCAN). Data output conforms to ASCII and SICS protocols; bidirectional communication enables remote parameter configuration and real-time weight streaming into LIMS or ELN platforms. e-Loader II software delivers over-the-air firmware updates with cryptographic signature verification and rollback capability—ensuring continuous alignment with evolving regulatory guidance (e.g., revised USP ). Optional LabX™ Direct software provides instrument-specific SOP execution, automated report generation, and statistical process control (SPC) charting—fully validated for FDA submission environments.
Applications
- Pharmaceutical: Active pharmaceutical ingredient (API) dispensing, reference standard preparation, content uniformity testing per USP .
- Chemistry: Stoichiometric reagent weighing, catalyst dosage, gravimetric titration endpoint determination.
- Materials Science: Nanoparticle mass fraction analysis, thin-film deposition yield quantification, battery electrode slurry formulation.
- Food & Agriculture: Nutrient fortification verification, pesticide residue reference material preparation, moisture content gravimetry (ASTM D4457).
- Environmental: Filter weighing for PM2.5/PM10 analysis (EPA Method 201A), soil organic carbon determination (ISO 14235).
FAQ
What does “DeltaRange” mean in XP model nomenclature?
DeltaRange refers to METTLER TOLEDO’s patented dual-range design that provides two distinct readability/capacity combinations within a single balance—e.g., XP105DR offers both 0.01 mg resolution at 31 g and 0.1 mg at 120 g—optimized for flexibility without sacrificing precision.
Is MinWeigh functionality enabled out-of-the-box?
No. MinWeigh requires on-site activation and configuration by a certified METTLER TOLEDO service engineer to ensure alignment with user-defined uncertainty thresholds and regulatory acceptance criteria (e.g., USP minimum weight = 2 × expanded uncertainty).
Can the XP Series connect directly to a corporate network?
Yes—via the optional Ethernet module, enabling DHCP/IP assignment, DNS resolution, and TLS 1.2-secured data transmission compatible with modern IT security policies.
How often must ProFACT calibration be performed?
Calibration frequency is application-dependent but typically scheduled every 2–8 hours in high-precision labs; the system logs all events with operator ID, timestamp, and result status—fully auditable for ISO 17025 accreditation.
Are XP balances suitable for Class A weighing applications?
Yes—when installed on a vibration-isolated bench, operated within specified environmental limits (20 ± 2 °C, <50% RH, no drafts), and verified using certified weights per ISO 17025, XP models satisfy Class A performance criteria per EUR Pharm 2.1.6 and USP .
