Sartorius BSA224S Analytical Balance

Overview

The Sartorius BSA224S Analytical Balance is a high-precision mass measurement instrument engineered for routine laboratory applications requiring reproducible, traceable, and compliant weighing results. Designed and manufactured in Germany, it operates on electromagnetic force compensation (EMFC) principle — a metrologically robust method where the mass-dependent gravitational force on the sample is counterbalanced by a precisely regulated electromagnetic current, yielding direct digital readout with exceptional stability and minimal drift. With a maximum capacity of 220 g and readability of 0.0001 g (100 µg), the BSA224S meets the performance criteria defined in USP for analytical balances used in pharmaceutical quality control, chemical synthesis, and reference standard preparation. Its rigid monolithic sensor architecture — featuring a super-dual-lever single-unit transducer and 40 MHz microprocessor (MC1) — ensures rapid stabilization (<2.5 s average response time) and resistance to mechanical perturbation, making it suitable for environments with moderate air currents or vibration.

Key Features

• Electromagnetic force compensation (EMFC) sensor with monolithic dual-lever design for high long-term stability and low thermal drift
• Five-sided draft shield with anti-static coated glass, minimizing electrostatic interference and enabling unobstructed visual access during critical weighing procedures
• Integrated RS232 interface compliant with GLP data integrity requirements; supports bidirectional communication with LIMS and electronic lab notebooks
• Front-mounted level indicator and automatic leveling assistance ensure optimal mechanical alignment prior to operation
• Dual tare keys (left/right positioned) accommodate ergonomic preferences across user cohorts, reducing repetitive strain during high-throughput workflows
• Downward hook assembly enables below-balance density determination and magnetic susceptibility measurements when paired with optional YDK03/YDK04 density kits
• Dynamic temperature compensation algorithm actively corrects for ambient thermal fluctuations, maintaining accuracy across typical lab temperature ranges (10–30 °C)
• Self-diagnostic system continuously monitors sensor integrity, load cell status, and environmental parameters, issuing alerts for out-of-spec conditions
• Overload protection circuitry prevents damage from accidental overloading up to 150% of rated capacity

Sample Compatibility & Compliance

The BSA224S accommodates a wide range of sample forms — powders, granules, liquids in tared vessels, small solid components, and reference standards — within its 90 mm diameter stainless steel weighing pan. Its draft shield configuration complies with ISO 9001 and ISO/IEC 17025 requirements for controlled weighing environments. The balance supports full audit trail generation (when connected to compliant software), satisfying FDA 21 CFR Part 11 expectations for electronic records in regulated industries. It is routinely employed in laboratories adhering to pharmacopeial methods (USP , EP 2.1.6), ASTM E898 (Standard Practice for Calibration of Analytical Balances), and GMP/GLP frameworks where documented calibration traceability to national standards (e.g., PTB, NIST) is mandatory. External calibration using certified Class E2 or F1 weights ensures metrological traceability without internal mass artifacts.

Software & Data Management

The BSA224S communicates via standardized RS232 protocol, enabling seamless integration with Sartorius LabX Lite (free basic version) or full LabX software for advanced data handling. All weight readings include timestamp, operator ID (via optional keypad login), balance ID, and environmental metadata (if external sensors are connected). Data export formats include CSV, TXT, and XML — compatible with ELN systems and statistical process control (SPC) platforms. The built-in GLP-compliant print function (with optional YDP20 printer) automatically appends calibration status, date/time, and unique identifier to each hardcopy record. No proprietary drivers or cloud dependencies are required for core functionality, ensuring compatibility with air-gapped or legacy IT infrastructures common in regulated manufacturing sites.

Applications

• Pharmaceutical formulation: Accurate dispensing of active pharmaceutical ingredients (APIs) and excipients per batch records
• Reference material certification: Preparation and verification of CRM sub-samples under ISO Guide 35 protocols
• Chemical synthesis: Stoichiometric reagent weighing for reaction scaling and yield calculation
• Quality control labs: Content uniformity testing, loss-on-drying (LOD), and assay validation per ICH Q2(R2)
• Academic research: Gravimetric analysis, catalyst loading, and nanomaterial mass quantification
• Environmental testing: Filter weighing for particulate matter (PM2.5/PM10) analysis per EPA Method 201A
• Density determination: Solid/liquid density measurements using Archimedean principle with YDK03 kit

FAQ

What calibration weights are recommended for the BSA224S?
Class E2 stainless steel weights (certified to ISO 9001 and ISO/IEC 17025) are recommended for external calibration at full capacity (220 g) and intermediate points (e.g., 50 g, 100 g) to verify linearity per ASTM E898.
Does the BSA224S support internal calibration?
No — the standard BSA224S model requires external calibration. For automated internal calibration, specify the BSA224S-CW variant equipped with motorized internal calibration mass.
Can this balance be used in a fume hood?
Yes, provided the draft shield remains fully closed and airflow inside the hood is laminar and non-turbulent; however, placement outside hoods is preferred to minimize convection-induced instability.
Is the RS232 interface compatible with modern Windows/macOS systems?
Yes — using a USB-to-RS232 adapter with standard COM port emulation, the balance integrates with LabX, Excel VBA macros, or custom Python/Node.js serial scripts without vendor-specific drivers.
What is the warranty coverage for the BSA224S?
Sartorius provides a 2-year limited warranty covering parts and labor for defects in materials and workmanship under normal laboratory use, extendable to 3 years with registered service plan enrollment.