OHAUS PX85 Pioneer PX5 Semi-Micro Balance, 82g Capacity, 0.01mg Readability, AutoCal, GLP/GMP

OHAUS PX85 Pioneer PX5 Semi-Micro Balance — 0.01 mg Readability with AutoCal Automatic Calibration

Five-decimal weighing demands an instrument that is both precise and easy to keep in calibration. The OHAUS PX85 Pioneer PX5 Semi-Micro Balance answers with 0.01 mg readability, AutoCal fully automatic internal calibration, and an 82 g range — a combination that makes it highly capable for pharmaceutical, chemical, and materials research where every microgram matters.

Key Features

• AutoCal Fully Automatic Internal Calibration: Unlike semi-automatic systems, AutoCal engages the internal calibration weight automatically whenever a temperature drift is detected, ensuring the balance self-corrects without operator intervention.
• 0.01 mg (5-Decimal) Readability: Resolving to 10 micrograms, the PX85 serves applications where analytical balances fall short — nanomaterial research, microbalance formulation, and high-sensitivity method development.
• Glass Draftshield with Enclosed Chamber: A fully enclosed weighing space is mandatory at 0.01 mg resolution; the draftshield keeps air movements from introducing measurement error that would exceed the instrument's own linearity specification.
• 10-Second Stabilization, 20 mg USP Minimum Weight: The extended settling time reflects the ultra-fine resolution; the 20 mg USP minimum weight confirms suitability for validated pharmaceutical methods at this resolution tier.
• GLP/GMP Data Output with Real-Time Clock: Traceable, time-stamped records document every measurement session — an essential capability for audited research and regulated manufacturing environments.
• USB and RS232 Communication: Both interfaces support connectivity to LIMS platforms, printers, and PC-based weighing software, keeping data capture options open.
• User-Definable IDs and Security Lockout: Operator and project IDs attach to printouts automatically; the security lock prevents unauthorised changes to calibration or communication settings.

Detailed Overview

The OHAUS PX85 operates in a performance tier where automatic calibration is not optional — temperature-induced drift at the 0.01 mg level is measurable over the course of a single lab session. AutoCal handles this continuously, so researchers can focus on sample preparation rather than monitoring calibration status. Linearity is rated at ±0.0001 g, and typical repeatability is 0.02 mg. The 80 mm pan accommodates standard micro-vessels and weighing boats, while the enclosed draftshield and in-use cover protect the measurement surface between uses. Four operating languages and a wide unit library extend this instrument to international multi-disciplinary teams.

Applications

• Microbalance-grade formulation of pharmaceutical APIs and excipients
• Nanomaterial and thin-film mass characterisation in materials science
• Reference standard preparation for high-precision analytical methods
• Low-concentration solution preparation requiring five-decimal accuracy
• Academic research in chemistry and biochemistry at microgram scales

Why Choose the OHAUS PX85?

Researchers who have outgrown analytical balances but need a more accessible alternative to a dedicated microbalance will find the PX85 delivers at the 0.01 mg level. AutoCal keeps it calibrated autonomously, and GLP-compliant output satisfies the traceability expectations of both academic and industrial regulatory frameworks. Add to cart to bring five-decimal confidence to your most sensitive weighing tasks.