Precisa XS625M Precision Analytical Balance

Overview

The Precisa XS625M is a high-precision analytical balance engineered for routine laboratory weighing tasks requiring consistent 1 mg readability and robust metrological performance. Designed and manufactured in Switzerland, it employs electromagnetic force compensation (EMFC) technology — the industry-standard principle for modern analytical balances — to deliver stable, drift-resistant measurements under variable ambient conditions. Its 625 g capacity and sub-milligram resolution make it suitable for quantitative sample preparation, reagent dispensing, formulation checks, and quality control procedures in pharmaceutical, chemical, academic, and food testing laboratories. The instrument complies with international weighing standards including OIML R76 and ISO/IEC 17025 requirements for calibration traceability, and its mechanical and electronic architecture supports GLP-compliant documentation workflows when integrated with validated software.

Key Features

• Fluorescent display with wide viewing angle and high contrast — ensures legible readings under low-light, bright ambient, or oblique observation conditions without backlight dependency.
• Three-step adjustable stability setting — allows users to optimize response time versus noise rejection based on environmental vibration levels or sample volatility (e.g., volatile solvents or static-prone powders).
• Internal self-calibration with user-definable weight calibration — eliminates reliance on external certified masses for routine verification; supports interval-based recalibration protocols aligned with ISO 9001 and FDA 21 CFR Part 11 audit trails when paired with compliant software.
• Automatic power-on after mains recovery — maintains operational continuity following brief power interruptions, reducing manual intervention during multi-hour batch processes.
• Programmable auto-off function — configurable idle timeout prevents unnecessary energy consumption while preserving internal thermal equilibrium between weighing sessions.
• Chromium-nickel steel weighing pan (135 × 135 mm) — corrosion-resistant, non-magnetic, and compatible with common lab solvents and cleaning agents per IEC 61000-6-3 EMC guidelines.

Sample Compatibility & Compliance

The XS625M accommodates standard laboratory vessels including beakers, weighing boats, crucibles, and vials up to 135 mm square footprint. Its 60 mm draft shield height provides adequate airflow management for most non-aerosolized solid and semi-solid samples. For regulated environments, the balance meets essential requirements of USP <41> for repeatability testing and supports method validation per ASTM E898-22 (Standard Guide for Selection and Use of Laboratory Balances). It is CE-marked, RoHS-compliant, and designed to operate within Class II environmental conditions (ISO 14644-1 cleanroom compatibility not claimed, but particulate ingress resistance aligns with IP20 enclosure rating).

Software & Data Management

The XS625M features RS232 and optional USB interfaces for seamless integration with LIMS, ELN, or custom data acquisition systems. When used with Precisa’s certified WinCT Balance Software (v5.0+), it enables full 21 CFR Part 11 compliance — including electronic signatures, audit trail generation, user access control, and immutable data export (CSV, PDF, XML). All calibration events, tare operations, and stability adjustments are timestamped and logged with operator ID if network-authenticated. Firmware updates are performed via secure USB key to ensure integrity and version traceability.

Applications

• Pharmaceutical QC: Active pharmaceutical ingredient (API) assay, tablet weight variation testing per USP <905>, and excipient blending verification.
• Chemical synthesis: Stoichiometric reagent dosing, yield calculation, and gravimetric titrant standardization.
• Materials science: Powder density determination, catalyst loading quantification, and thin-film mass monitoring.
• Food & beverage: Nutrient labeling compliance checks, moisture loss tracking, and portion control validation.
• Academic research: General chemistry labs, polymer characterization prep, and environmental sample analysis where ISO/IEC 17025 traceability is required.

FAQ

What calibration standards does the XS625M support?
It accepts internal calibration using factory-traceable reference weights (class E2 or better) and supports external adjustment with certified masses per ISO 17025-accredited calibration labs.
Is the fluorescent display optional or standard?
The fluorescent display is standard on all XS625M units shipped from Precisa Switzerland; no configuration selection is required at order stage.
Can the balance operate continuously without auto-shutdown?
Yes — the auto-off timer can be disabled via the setup menu, allowing uninterrupted operation for extended weighing campaigns or integration into automated workstations.
Does the XS625M meet FDA requirements for electronic records?
When used with WinCT Balance Software and configured per Precisa’s Part 11 Implementation Guide, it satisfies predicate rule requirements for electronic signatures, audit trails, and data integrity as defined in 21 CFR Part 11 Subpart B.
What is the recommended recalibration frequency?
Precisa recommends daily zero-check, weekly performance verification using check weights, and full recalibration every 3–6 months depending on usage intensity and environmental stability — documented in accordance with ISO/IEC 17025 clause 6.5.