OHAUS EXR623 Explorer EXR Precision Balance, 620g Capacity, 1mg Readability, AutoCal, Touchscreen

OHAUS EXR623 Precision Balance — Milligram Precision Scaled to 620 g for Flexible Lab Use

Laboratories that frequently weigh samples ranging from a few grams to over half a kilogram at milligram resolution will find the OHAUS EXR623 Precision Balance particularly well-suited to their needs. With a 620 g maximum capacity and 1 mg readability, this instrument handles everything from fine chemical dispensing to larger preparative chemistry batches within a single enclosed draftshield design. AutoCal™ calibration keeps results dependable without operator action.

Key Features

• 620 g Maximum Capacity: A broad working range for a milligram-class instrument, accommodating large-container tares alongside high-precision sample weighing in the same workflow.
• 1 mg Readability: Milligram-level resolution provides reliable accuracy for dispensing, formulation, and check-weighing tasks across the full 620 g range.
• Anti-Static Glass Draftshield: Enclosed 130 × 130 mm weighing chamber blocks drafts and electrostatic interference that affect 1 mg readings from samples with low density or small mass.
• AutoCal™ Automatic Internal Calibration: The internal motorized weight self-calibrates whenever thermal drift is measured, reducing downtime and removing manual calibration from daily routines.
• 7-inch TFT Touchscreen: Color glass-overlay display with two proximity sensors supports touchless taring and convenient access to the 11 application modes built into the Explorer EXR platform.
• Full Connectivity Portfolio: USB Device, USB Host × 2, RS232, Ethernet standard; optional wireless module for Wi-Fi and Bluetooth data transfer.
• Audit and User Controls: Four-level user management and a 100,000-entry system log satisfy GLP documentation requirements with minimal administrative overhead.

Detailed Overview

The EXR623 doubles the working range of the EXR223 while maintaining the same 1 mg readability and enclosed draftshield architecture. This broader range is particularly valuable in preparative chemistry and pharmaceutical development, where reaction vessels, solvents, and reagents combined can easily reach 500–600 g without sacrificing milligram accuracy. The 130 × 130 mm stainless-steel 316 pan and the anti-static glass enclosure work together to provide a stable measurement environment regardless of the sample mass within that range. The instrument operates between 10°C and 30°C, meeting standard laboratory temperature requirements. With NTP synchronization ensuring accurate data timestamps and HID-compatible USB connectivity removing driver-installation overhead, the EXR623 integrates cleanly into both standalone and networked data-management environments.

Applications

• Preparative chemistry where reagent masses span a few milligrams to several hundred grams
• Pharmaceutical product formulation requiring milligram accuracy across broad sample ranges
• Jewelry and precious-metal assessment covering light and heavy sample masses at 1 mg resolution
• Check weighing of packaged products where target mass spans a wide distribution
• Research biology and biochemistry weighing of reagents from small quantities to multi-hundred-gram stocks

Why Choose the OHAUS EXR623?

The OHAUS EXR623 Precision Balance gives you milligram accuracy across a 620 g range — a pairing that eliminates balance-switching in protocols with highly variable sample masses. Its automated calibration, full connectivity, and compliance tools reduce both operating costs and administrative burden. Order today to handle your widest range of milligram-precision tasks from a single instrument.