OHAUS EXR225D Explorer EXR Semi-Micro Balance, 120 g/220 g Capacity, 0.01 mg/0.1 mg Readability, AutoCal, Touchscreen

OHAUS EXR225D Semi-Micro Balance — Dual-Range 120 g/220 g for Versatile High-Precision Work

Switching between semi-micro and standard analytical weighing within a single session becomes seamless with the OHAUS EXR225D Semi-Micro Balance. Its dual-range configuration delivers 0.01 mg readability up to 120 g and shifts to 0.1 mg readability for the full 220 g range — a versatility that suits complex preparative workflows, mixed-scale compound synthesis, and quality-control verification across a wide sample-mass spectrum.

Key Features

• 120 g / 220 g Dual-Range Capacity: Upper range of 220 g at 0.1 mg broadens sample scope, while the lower range of 120 g at 0.01 mg delivers semi-micro precision when required.
• AutoCal™ Automatic Calibration: Temperature-sensitive internal calibration mechanism keeps both ranges within specification without manual calibration breaks or external weights.
• Anti-Static Glass Draftshield: 80 × 80 mm enclosed weighing chamber reduces electrostatic and airflow interference, essential at 0.01 mg sensitivity levels.
• 7-inch TFT Color Touchscreen: Glass-overlay display with two touchless proximity sensors enables hands-free taring and mode changes to protect delicate measurements.
• Full Wired Connectivity: USB Device, USB Host × 2, RS232, Ethernet ready out of the box; optional wireless module for network-connected data transfer.
• NTP Time Synchronization: Timestamps on every logged event maintain audit-trail integrity in systems where time-of-measurement traceability is required.
• 11 Weighing Application Modes: Covers formulation, differential weighing, peak hold, density determination, and more — switchable from the main touchscreen menu.

Detailed Overview

The EXR225D differs from the single-range EXR225 in that it extends the upper capacity to 220 g while maintaining the 0.01 mg floor at 120 g, creating a wider practical window for compound development workflows. Analysts preparing multi-step reactions — measuring a 150 g solvent base at 0.1 mg followed by a 50 mg active ingredient at 0.01 mg — can remain on a single instrument. The 80 × 80 mm pan and fully enclosed anti-static draftshield keep both ranges protected from environmental disturbance. Metal housing ensures dimensional stability, and the 10°C–30°C operating window corresponds to standard climate-controlled laboratory settings. The HID-compatible USB connection removes device-driver overhead when connecting to host PCs, simplifying IT management in multi-instrument labs. A 1,000-entry sample library reduces repetitive data entry across high-throughput weighing schedules.

Applications

• Multi-step pharmaceutical synthesis mixing micro-quantity additives with larger solvent or excipient masses
• QC comparison testing that spans semi-micro and standard analytical sample sizes in the same batch
• Materials science research with wide sample-mass variation across experimental conditions
• Calibration-laboratory verification of weights across the 100–200 g class at two precision levels

Why Choose the OHAUS EXR225D?

The OHAUS EXR225D Semi-Micro Balance removes the need to maintain two separate high-precision instruments for overlapping mass ranges. Dual-range operation, automated calibration, and a touchscreen interface that keeps complex workflows simple make it a practical investment for busy analytical laboratories. Order today to cover your full precision-weighing spectrum with one instrument.