OHAUS PR523N/E PR Precision Balance, 520g Capacity, 0.001g Readability, NTEP Certified

OHAUS PR523N/E Precision Balance — NTEP-Certified 1mg Resolution at 520g Capacity

Certified accuracy at the milligram level defines the OHAUS PR523N/E Precision Balance. Sharing the same 0.001g readability and NTEP legal-for-trade certification as the PR523N, this model uses external calibration rather than internal — making it the right fit for facilities that maintain traceable external calibration weight sets as part of their accredited quality program, or where per-instrument calibration records are a compliance requirement.

Key Features

• 0.001g (1mg) Readability: Milligram-level discrimination across a 520g range serves applications that standard centigram balances cannot address accurately.
• NTEP Legal-for-Trade Certification: Certified at 0.01g, the balance satisfies legal requirements for trade applications while displaying measurements at 1mg granularity.
• External Calibration with Span Point Selection: Users apply a traceable external calibration weight and select from user-defined span calibration points, enabling integration with existing metrology programs.
• Included Glass Draftshield: Encloses the 120 mm pan to suppress air current interference — essential for consistent readings at 1mg sensitivity.
• 2-Second Stabilization Time: Milligram-precision results confirmed within two seconds, maintaining practical measurement throughput.
• RS232 Connectivity: Serial communication port supports connection to data management systems and label printers for documented, auditable output.
• Calibration Lock and Security Bracket: Preserve the certified calibration state and prevent unauthorized adjustments in regulated or inspected environments.

Detailed Overview

The OHAUS PR523N/E Precision Balance and the PR523N share the same fundamental measurement performance — 0.001g readability, NTEP certification, glass draftshield, 520g capacity — but differ in calibration method. The PR523N/E relies on an external calibration weight applied by the operator, which aligns with quality programs that mandate external-mass traceability and maintain calibration records tied to specific physical reference masses. Repeatability of 0.001g and linearity within ±0.002g confirm the balance holds milligram-level consistency throughout its working range. The draftshield construction — removable glass with sliding top door — reduces air interference during weighing while allowing easy sample loading. Operating between 10°C and 40°C with the 10°C–30°C range specified for optimal accuracy, the balance suits both air-conditioned laboratories and standard indoor environments.

Applications

• Accredited laboratory weighing programs requiring externally traceable calibration records at 1mg resolution
• Commercial dispensing and dosing where milligram precision and NTEP certification are simultaneously mandated
• Pharmaceutical quality control where external calibration weights are part of the validated weighing procedure
• High-precision research measurements that are too heavy for analytical balances but too fine for standard precision instruments

Why Choose the OHAUS PR523N/E?

The PR523N/E is the externally calibrated counterpart to the InCal PR523N, making it the correct choice for labs and commercial operations that must maintain external calibration traceability at 1mg resolution. NTEP certification, glass draftshield, and RS232 connectivity round out a capable, compliance-ready instrument. Add to cart today to equip your accredited measurement program with certified milligram-level precision.