Precisa XS125A Analytical Balance

Overview

The Precisa XS125A Analytical Balance is a high-precision laboratory instrument engineered for demanding mass measurement applications in research laboratories, quality control environments, and regulated pharmaceutical and chemical production facilities. Based on electromagnetic force compensation (EMFC) technology, the XS125A delivers stable, drift-resistant measurements with a readability of 0.1 mg across its full 125 g capacity. Its robust mechanical architecture—featuring a monolithic weighing cell, chromium-nickel steel pan (Ø80 mm), and integrated draft shield (240 mm height)—ensures mechanical stability and minimizes environmental interference. Designed and manufactured in Switzerland, the balance complies with international metrological standards including OIML R76-1 and EN 45501, and supports traceable calibration protocols required under ISO/IEC 17025, USP , and EU GMP Annex 11.

Key Features

• Fluorescent display with wide viewing angle and ambient-light-independent legibility—optimized for low-light lab benches and multi-operator environments.
• Three-step adjustable stability setting allows users to configure response speed versus noise rejection based on sample volatility, air currents, or vibration conditions.
• Automatic power-on at mains restoration and programmable auto-off (user-selectable idle timeout) reduce energy consumption and extend component lifetime without compromising operational readiness.
• Internal calibration mode supports user-initiated adjustment using built-in reference masses; external calibration is fully compatible with standard weights—including the supplied F1-class 100 g certified reference weight (calibration certificate issued by Shanghai Technical Supervision Bureau).
• Electromagnetic compatibility (EMC) certified per IEC 61326-1; operating temperature range of 0–40 °C ensures consistent performance in non-climate-controlled labs or cleanroom antechambers.
• Low power draw (6 VA) and dual-voltage capability (115/230 V AC, 50–60 Hz) enable global deployment without transformer dependency.

Sample Compatibility & Compliance

The XS125A accommodates a broad range of sample forms—from powders and granules to small-volume liquids in tared vessels—thanks to its large-diameter pan and optimized draft shield geometry. The Ø80 mm stainless-steel pan resists corrosion from common solvents and cleaning agents. All firmware and hardware configurations meet regulatory requirements for data integrity: audit trail logging (with timestamped event records), user access levels, and password-protected parameter changes align with FDA 21 CFR Part 11 and EU Annex 11 expectations. Routine verification procedures can be documented per ASTM E898 or ISO 17034 guidelines when used with certified reference materials.

Software & Data Management

The balance features RS232 and optional USB interfaces for direct connection to LIMS, ELN, or MES platforms. Data output follows standardized ASCII format with configurable delimiters and prefix/suffix identifiers (e.g., sample ID, operator code, date/time stamp). Optional PC software enables real-time graphing, statistical analysis (mean, SD, CV%), GLP-compliant report generation, and automated export to CSV or PDF. All measurement events—including calibration, tare, zero, and stability triggers—are logged with immutable timestamps and operator IDs where authentication is enabled.

Applications

• Quantitative analytical chemistry: preparation of standard solutions, gravimetric titration, and reagent dispensing.
• Pharmaceutical QC: assay validation, content uniformity testing, and excipient blending verification per USP .
• Materials science: density determination via pycnometry, catalyst loading accuracy checks, and nanomaterial dosing.
• Environmental testing labs: filter weighing for particulate matter (PM_2.5/PM₁₀) analysis per EPA Method 201A.
• Academic teaching labs: fundamental metrology instruction, uncertainty budgeting exercises, and inter-laboratory comparison studies.

FAQ

Is the XS125A compliant with ISO/IEC 17025 calibration requirements?
Yes—the balance supports documented calibration using traceable standards, and its linearity (±0.2 mg), reproducibility (≤0.1 mg), and sensitivity drift (±2 ppm/°C) fall within acceptable tolerances for accredited testing laboratories.
Does the included 100 g weight satisfy national metrological verification requirements outside China?
The F1-class weight is accompanied by a certificate traceable to NIM (China National Institute of Metrology); for use in EU or US labs, users should verify equivalency via MRA signatory NMIs or perform local recalibration.
Can the fluorescent display be replaced with an LCD option?
No—the XS125A is offered exclusively with the high-contrast fluorescent display as standard; no LCD variant exists in this model series.
What is the recommended recalibration interval under GLP conditions?
Precisa recommends daily verification with check weights and formal recalibration every 3–6 months, depending on usage frequency, environmental stability, and risk assessment per ISO/IEC 17025 Clause 6.5.
Is the draft shield removable for cleaning or large-sample accommodation?
Yes—the acrylic draft shield is tool-free detachable and designed for routine decontamination without affecting mechanical alignment or calibration integrity.