Sartorius BSA323S-CW Precision Balance

Overview

The Sartorius BSA323S-CW is a high-performance precision balance engineered for routine analytical and quality control tasks in regulated laboratory environments. Operating on electromagnetic force compensation (EMFC) principle, it delivers stable, drift-resistant measurements under variable ambient conditions—including minor air currents, temperature fluctuations, and vibration. With a capacity of 320 g and readability of 1 mg, the BSA323S-CW meets the performance requirements of ISO 9001, ISO/IEC 17025, and pharmacopeial standards such as USP <41> for repeatability and accuracy verification. Its robust mechanical design incorporates a monolithic weighing cell and draft shield-compatible pan geometry (Ø 115 mm), ensuring long-term stability and minimal maintenance. Unlike basic entry-level balances, the BSA323S-CW integrates real-time digital filtering algorithms that dynamically compensate for environmental disturbances—reducing settling time by up to 40% compared to conventional EMFC systems without sacrificing resolution or linearity.

Key Features

• Internal motor-driven calibration: Fully automated, traceable calibration using built-in certified weights—initiated with a single key press and compliant with ISO 8655-6 and EURAMET cg-18 guidelines.
• GLP/GMP-ready data integrity: Time-stamped, operator-ID-capable event logging (when connected to compatible printers or PCs); supports audit trail generation per FDA 21 CFR Part 11 when used with Sartorius LabX software.
• Optimized human-machine interface: Backlit LCD display with 15 mm high-contrast characters ensures legibility under all ambient lighting conditions; intuitive menu navigation with dedicated function keys and dual-directional cursor control.
• Multi-language support: Five pre-installed UI languages (English, German, French, Spanish, Chinese) enable seamless operation across multinational R&D and manufacturing sites.
• Standardized application suite: Preconfigured workflows include percentage weighing, piece counting, dynamic/animal weighing, unit conversion (g, oz, ct, dwt, etc.), and arithmetic operations—eliminating manual calculation errors.
• Robust connectivity: RS-232C bidirectional interface enables direct integration with LIMS, ELN, or ERP systems; optional USB-to-RS232 adapters allow compatibility with modern Windows/macOS workstations.

Sample Compatibility & Compliance

The BSA323S-CW accommodates a broad range of sample types—from fine powders and viscous liquids (in tared containers) to small solid components and biological specimens. Its Ø 115 mm stainless-steel pan provides adequate surface area for standard weighing vessels while maintaining optimal load distribution across the EMFC sensor. The balance conforms to international regulatory frameworks including ISO 9001:2015 (clause 7.1.5), EU Directive 2014/31/EU (Non-Automatic Weighing Instruments), and ASTM E898–22 for laboratory balance verification procedures. All internal calibration events generate metadata (date/time, operator ID if enabled, deviation values) required for GLP audits and ISO/IEC 17025 accreditation. Optional YDP03-0CE thermal printer produces tamper-evident, timestamped records compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate).

Software & Data Management

While the BSA323S-CW operates autonomously via its embedded firmware, it is fully interoperable with Sartorius’ LabX™ balance software—a validated platform supporting full 21 CFR Part 11 compliance (electronic signatures, role-based access control, change control logs). LabX automates data capture, performs statistical analysis (e.g., repeatability, eccentricity, linearity), and generates PDF reports conforming to ISO/IEC 17025 Annex A.3. For laboratories without LabX, the RS-232C port supports ASCII protocol output compatible with custom scripts (Python, LabVIEW) or spreadsheet-based data acquisition. All communication adheres to Sartorius’ documented command set (BSA Protocol v3.2), ensuring reproducible integration across instrument fleets.

Applications

• Pharmaceutical QC: Active pharmaceutical ingredient (API) dispensing, excipient blending verification, and tablet weight uniformity testing per USP <905>.
• Chemical synthesis: Stoichiometric reagent weighing, catalyst dosage control, and yield calculation in R&D labs.
• Food & beverage testing: Moisture content determination (via loss-on-drying protocols), nutritional labeling compliance, and batch release testing.
• Materials science: Density determination (with pycnometer), powder flow characterization (via tapped density), and coating thickness validation.
• Environmental testing: Filter weighing for particulate matter (PM_2.5/PM₁₀) analysis per EPA Method 201A and ISO 12103-1.

FAQ

Does the BSA323S-CW require external calibration weights?
No. It features an integrated motor-driven calibration mechanism with factory-certified internal weights, eliminating dependency on external mass standards for daily verification.
Is the balance suitable for use in fume hoods or controlled environments?
Yes—its sealed electronics, low power consumption (≤5 W), and draft shield compatibility make it appropriate for Class II biosafety cabinets and ISO Class 5–7 cleanrooms when operated within specified temperature (10–30 °C) and humidity (30–80% RH, non-condensing) ranges.
Can the BSA323S-CW be validated per GxP requirements?
Yes. Documentation packages—including Installation Qualification (IQ), Operational Qualification (OQ), and Performance Qualification (PQ) templates—are available from Sartorius upon request and align with Annex 15 and WHO TRS 991 guidelines.
What is the warm-up time before achieving full specification accuracy?
The balance reaches thermal equilibrium and full metrological performance within 30 minutes after power-on, as verified per OIML R 76-1 Annex C.
How does the BSA323S-CW handle electrostatic interference during low-mass weighing?
It includes an optional external ionizer port (compatible with Sartorius E3100 series) and supports grounding via the RS-232 shield—critical for accurate sub-10 mg measurements of insulating materials like polymers or dried botanicals.