Shimadzu AP Series Precision Analytical Balance

Overview

The Shimadzu AP Series Precision Analytical Balance is an entry-level analytical balance engineered for high-reproducibility mass measurement in regulated laboratory environments. Utilizing electromagnetic force compensation (EMFC) technology, the AP Series delivers stable, drift-compensated weighing performance across temperature fluctuations and minor mechanical disturbances. With a capacity range of 2 g to 5 g and a readability of 0.1 mg (100 µg), it is optimized for low-mass applications where resolution and repeatability are critical—particularly in pharmaceutical formulation development, reference standard handling, and small-volume solution preparation. The balance operates under constant internal calibration monitoring and incorporates real-time environmental compensation algorithms to maintain accuracy without manual recalibration under typical lab conditions (20–25 °C, 45–60% RH).

Key Features

• High-Speed Stabilization: Achieves stable readings in ≤1.5 seconds under standard ambient conditions, minimizing dwell time during high-throughput sample processing workflows.
• Integrated Electrostatic Control: Features an active static elimination system that continuously monitors and neutralizes surface charge on samples and containers—reducing weighing errors caused by electrostatic attraction, especially with low-mass powders or plastic vessels.
• USB-Native Data Interface: Equipped with a standard USB 2.0 port supporting direct connection to Windows-based PCs without proprietary drivers; compatible with Shimadzu’s optional LabSolutions Balance software and third-party LIMS/ELN platforms via ASCII or Sartorius-compatible weighing protocol emulation.
• Pharmaceutical Workflow Optimization: Preconfigured weighing modes include “Buffer Preparation”, “Standard Weighing”, and “Tare & Add” sequences—each with configurable tolerance limits, pass/fail indicators, and automatic log generation aligned with USP repeatability criteria.
• Robust Mechanical Architecture: Monolithic aluminum draft shield base with removable glass side panels and top access door; designed for easy cleaning and compliance with cleanroom Class 10,000 (ISO 7) maintenance protocols.

Sample Compatibility & Compliance

The AP Series accommodates standard analytical weighing vessels—including 30 mm and 45 mm diameter weighing boats, vials, and glass crucibles—within its compact 90 mm × 90 mm pan area. Its draft shield design minimizes air current interference while permitting rapid sample exchange. All firmware and operational logic adhere to ISO 9001:2015 manufacturing standards and are validated per ICH Q7 Annex 19 guidelines for analytical instrument qualification. Audit trail functionality (when used with LabSolutions Balance) supports ALCOA+ principles, including attributable, legible, contemporaneous, original, accurate, complete, consistent, enduring, and available records—enabling full traceability for FDA 21 CFR Part 11 and EU Annex 11 submissions.

Software & Data Management

Shimadzu LabSolutions Balance software provides centralized control, automated report generation (PDF/CSV), and electronic signature capability for user-defined workflows. Data export includes timestamped weight values, environmental metadata (temperature/humidity from optional external sensor), operator ID, balance status flags (e.g., draft shield open, static alert), and statistical summaries (n=3, %RSD). The system supports role-based access control (RBAC) and encrypted local storage compliant with NIST SP 800-53 controls. Raw weighing data is stored in non-erasable binary format with SHA-256 hash verification for integrity validation during GxP audits.

Applications

• Weighing of active pharmaceutical ingredients (APIs) and excipients during pre-formulation studies
• Preparation of calibration standards and reference materials per USP
• Accurate dispensing of buffer salts and pH-adjusting reagents in cell culture media development
• Quality control testing of lyophilized product fill weights (post-reconstitution verification)
• Research-scale catalyst loading in homogeneous catalysis experiments requiring sub-milligram precision

FAQ

Is the AP Series compliant with 21 CFR Part 11 for electronic records?
Yes—when operated with LabSolutions Balance software and configured with audit trail, electronic signatures, and secure user authentication, the system meets core technical requirements for electronic record integrity and authenticity.
Does the balance require external calibration weights for routine operation?
No—internal calibration is performed automatically at user-defined intervals or upon power-up; external calibration is only required during initial qualification or after relocation.
Can the AP Series be integrated into a networked laboratory information management system (LIMS)?
Yes—via USB-to-PC interface and ASCII output mode, it supports seamless integration with major LIMS platforms using standard serial communication protocols.
What is the recommended maintenance schedule for electrostatic mitigation components?
The ionizing module requires no consumables and undergoes self-diagnostic checks during startup; annual verification of ion output intensity is recommended using a calibrated field meter per ISO 14644-1 Annex B.
Is the draft shield removable for cleaning without affecting calibration?
Yes—the entire draft shield assembly is mechanically indexed and can be removed and reinstalled without requiring recalibration; all alignment features are factory-verified and documented in the instrument’s IQ/OQ documentation package.