Precisa XT220A Analytical Balance

Overview

The Precisa XT220A Analytical Balance is a high-precision mass measurement instrument engineered for demanding laboratory applications where reproducibility, traceability, and operational reliability are critical. Utilizing electromagnetic force restoration (EMFR) technology, the XT220A delivers stable, drift-compensated measurements with a readability of 0.1 mg across its full 220 g capacity range. Its monolithic aluminum die-cast housing provides exceptional mechanical rigidity and thermal stability—key factors in minimizing environmental influence on measurement integrity. Designed and manufactured in Switzerland, the balance conforms to international metrological requirements defined in OIML R76 and meets essential performance criteria outlined in USP , ASTM E898, and ISO/IEC 17025 for calibration laboratories. The instrument operates within standard ambient conditions (20 ± 5 °C, ≤ 60 % RH non-condensing), and its internal temperature compensation system ensures consistent performance during routine daily use.

Key Features

• Electromagnetic force restoration sensor with automatic zero-tracking and dynamic drift correction
• Large-format green fluorescent LCD display offering high contrast, wide viewing angle, and low-glare visibility under varied lighting conditions
• Automatic internal calibration triggered by time schedule, temperature shift (>1.5 °C), or user command—no external weights required
• Modular draft shield assembly with optimized airflow geometry and removable side panels for rapid cleaning and residue-free sample handling
• Intelligent power management: configurable auto-on/off scheduling, instantaneous recovery after mains interruption, and standby mode with real-time clock retention
• Firmware upgradability via Ethernet-connected PC using Precisa’s certified update utility—ensuring long-term compliance with evolving software validation requirements
• User-level access control with individual password authentication, audit trail logging of critical operations (e.g., calibration, tare, unit change), and GLP/GMP-ready event timestamping

Sample Compatibility & Compliance

The XT220A supports a broad spectrum of sample types—including powders, granules, liquids in tared vessels, and small solid components—within standard analytical workflows. Its 220 g maximum load accommodates typical volumetric flasks, crucibles, and weighing boats used in pharmaceutical assay preparation, chemical synthesis quantification, and quality control release testing. The balance complies with ISO 9001:2015 for quality management systems and incorporates design elements aligned with FDA 21 CFR Part 11 for electronic records and signatures when integrated with validated data acquisition software. All factory calibrations are traceable to national standards (e.g., METAS, NIST) through Precisa’s accredited calibration laboratory, and uncertainty budgets are documented per ISO/IEC 17025 Annex A.5.

Software & Data Management

Data output is supported via bidirectional RS232 serial interface (standard) with optional USB-to-RS232 adapters for modern PC integration. Communication protocols include ASCII-based commands compatible with LIMS, ELN, and custom SCADA platforms. The balance supports Sartorius-compatible print formats and configurable data packet structures (e.g., weight + time + user ID + stability flag). When paired with Precisa’s BalanceLink™ software (sold separately), users gain automated report generation, statistical process control (SPC) charting, and electronic signature support compliant with 21 CFR Part 11 Annex 11. Audit logs retain minimum 30 days of operation history locally and can be exported in CSV or PDF format with cryptographic hash verification.

Applications

• Pharmaceutical: Active pharmaceutical ingredient (API) dispensing, reference standard weighing, dissolution tablet mass uniformity testing
• Academic Research: Gravimetric analysis, catalyst loading, stoichiometric reagent preparation, thermogravimetric sample conditioning
• Materials Science: Powder density determination, thin-film deposition mass monitoring, composite formulation batching
• Food & Beverage QA: Nutrient fortification dosing, moisture content calculation (via loss-on-drying), packaging net weight verification
• Environmental Testing: Filter mass change analysis for particulate matter (PM_2.5/PM₁₀) quantification per EPA Method 201A

FAQ

Is the XT220A suitable for GxP-regulated environments?
Yes—the balance supports audit trail logging, user authentication, and electronic signature readiness when deployed with validated software interfaces and documented SOPs.
Does it require external calibration weights for routine verification?
No—internal motorized calibration is fully automated; however, periodic external verification using Class E2 or better weights is recommended per ISO/IEC 17025 clause 6.5.
Can the display brightness be adjusted manually?
No—the green fluorescent display operates at fixed luminance optimized for laboratory ambient light levels; no user-adjustable dimming is provided.
What is the warm-up time to achieve specified accuracy?
Stabilization to full specification occurs within 30 minutes after power-on at 20 °C ambient; extended stabilization may be required following large ambient temperature shifts.
Is Ethernet connectivity built-in or optional?
Ethernet is not integrated; firmware updates and advanced data transfer require an RS232 connection to a network-enabled host PC running BalanceLink™ or third-party middleware.