OHAUS PR523/E PR Series Precision Balance, 520g Capacity, 0.001g Readability, RS232 Connectivity

OHAUS PR523/E PR Series Precision Balance — Extended 520g Range at 0.001g Resolution

Larger sample batches and heavier vessels challenge balances at the lower end of the milligram-resolution class. The OHAUS PR523/E PR Series Precision Balance resolves that tension — it extends capacity to 520g while holding a 0.001g readability, giving analytical chemists, educators, and industrial QC teams room to weigh bulkier samples without sacrificing resolution.

Key Features

• 520g Capacity with 0.001g Readability: Wider range than the 220g and 320g PR models, accommodating larger weighing vessels, multi-sample boats, and heavier material cuts.
• Removable Glass Draftshield: The enclosed pan area protects against air-current interference during milligram-level measurements, critical when working with fine powders or fibrous materials.
• RS232 Serial Output: Direct connection to printers or computers enables GLP-format data capture with timestamps, user IDs, and project references.
• Selectable Environmental Filters: Three levels of vibration damping allow the balance to be tuned to the ambient conditions of a fume hood adjacent bench, production floor, or quiet analytical lab.
• Integrated Weigh-Below Hook: Enables density determination for solids and liquids using hydrostatic or suspension methods, without requiring additional fixtures.
• Auto-Dim and Brightness Control: Display brightness adjusts automatically during inactivity and can be set manually, protecting the screen and saving power during extended shifts.
• GLP-Compatible Printouts: User-definable project and user IDs are embedded in print records, supporting documentation requirements in pharmaceutical, food, and chemical industries.

Detailed Overview

The OHAUS PR523/E occupies the higher end of the PR Series capacity range, directly addressing workflows where vessel mass plus sample mass routinely approaches or exceeds 400g. Its 0.002g linearity specification is consistent across the full 520g span, ensuring that tared measurements at the top of the range remain as accurate as those near the pan's empty weight. The 120 mm round stainless steel pan pairs with standard 100 mL beakers and common laboratory weighing boats. Stabilization in 2 seconds keeps throughput practical for multi-sample routines. External calibration with user-selectable span points means calibration weights can be chosen to best represent the working range of each user's protocols. The balance supports 12 measurement units including pennyweight, newton, and Taiwan tael — useful in commercial and specialized research environments that employ non-standard units.

Applications

• Bulk reagent preparation requiring milligram precision
• Raw material acceptance testing in manufacturing
• Educational laboratory weighing with larger sample sets
• Density determination of solid samples

Why Choose the OHAUS PR523/E?

Teams that need the precision of a milligram balance but work with samples or vessels that exceed the typical 220–320g range will find the PR523/E the right tool. It extends capacity without compromising resolution or workflow efficiency. Add to cart to equip your bench with a 520g milligram-resolution balance ready for demanding daily use.